Mecachrome

Sainte-Foy-lès-Lyon, France

Mecachrome

Sainte-Foy-lès-Lyon, France
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OSLO, Norway--(BUSINESS WIRE)--Norsk Titanium AS, a world leader in additive manufactured titanium components, announced today that they have established an industrial scale supply chain capable of delivering high quality low-cost additive manufactured aerospace structural components. As part of a Long Term Agreement (LTA) signed last year with Mecachrome, the two companies have collaborated to develop the industrial processes needed to manufacture aerospace grade titanium components while leveraging the cost benefits of Norsk Titanium’s Rapid Plasma Deposition™ (RPD™) additive material. “Mecachrome is extremely proud and excited to collaborate with Norsk Titanium, and be part of that journey towards the shift to production of a disruptive innovation, leading to shorter cycle times and competitive costs,” said Mecachrome CEO Arnaud de Ponnat. “Mecachrome’s cutting-edge manufacturing processes have allowed for the low-cost production of FAA certified additive manufactured components,” said Norsk Titanium SVP of Operations Christopher Bohlmann. “Their capability has allowed for greatly improved buy-to-fly ratios with a one hundred percent machining yield on the first production lot. Mecachrome’s ability to achieve 100% yield with the extremely small machining margins of RPD™ is a testament to their capability.” The two companies continue to collaborate on cost improvement initiatives and are currently bidding on production orders from multiple aerospace customers, both in Europe and North America. Norsk Titanium AS is the world’s pioneering supplier of aerospace-grade, additive manufactured, structural titanium components. The company is distinguished in the aviation industry by its patented Rapid Plasma Deposition™ (RPD™) process that transforms titanium wire into complex components suitable for structural and safety-critical applications. Norsk Titanium is a tier-1 supplier to Boeing and is committed to cost-reducing aerostructures and jet engines for the world’s premier aerospace manufacturers. RPD™ is the world’s first FAA-approved, 3D-printed, structural titanium, delivering substantial lead-time and cost savings for aerospace, defense, and commercial customers. www.norsktitanium.com For 80 years, Mecachrome has been a leader in the design, engineering, manufacturing and assembling of complex precision-engineered components for aircraft and automotive applications, including aerostructural and aircraft engine components, high-end automobile engine components and motor racing engines. http://www.mecachrome.com


Fruhauf J.B.,Ecole Nationale Superieure des Mines de Saint - Etienne CMP | Roger J.,University Claude Bernard Lyon 1 | Dezellus O.,University Claude Bernard Lyon 1 | Gourdet S.,Airbus | And 5 more authors.
Materials Science and Engineering A | Year: 2012

Ti + 15%TiCp composites were prepared by three different powder metallurgy techniques: free sintering, HIPing and direct powder extrusion. The microstructures and textures were characterized by EBSD while the Ti/TiC reaction, which takes place during heat treatment, was characterized using X-ray diffraction and Rietveld analysis. The mechanical properties were obtained by the mean of tensile tests. TiC particles effectively reinforce the strength of the Ti matrix by at least 40% indicating the Ti/TiC reaction did not deteriorate the mechanical properties. The correlation between the microstructural features and the mechanical properties is discussed and the processes are compared. Direct powder extrusion was shown to be the most suitable process to obtain ductile composites (e{open}= 4.6%). © 2012 Elsevier B.V.


Samer N.,University Claude Bernard Lyon 1 | Andrieux J.,University Claude Bernard Lyon 1 | Gardiola B.,University Claude Bernard Lyon 1 | Karnatak N.,Mecachrome | And 7 more authors.
Composites Part A: Applied Science and Manufacturing | Year: 2015

A metal matrix composite has been obtained by a novel synthesis route, reacting Al3Ti and graphite at 1000 °C for about 1 min after ball-milling and compaction. The resulting composite is made of an aluminium matrix reinforced by nanometer sized TiC particles (average diameter 70 nm). The average TiC/Al ratio is 34.6 wt.% (22.3 vol.%). The microstructure consists of an intimate mixture of two domains, an unreinforced domain made of the Al solid solution with a low TiC reinforcement content, and a reinforced domain. This composite exhibits uncommon mechanical properties with regard to previous micrometer sized Al-TiC composites and to its high reinforcement volume fraction, with a Young's modulus of ∼110 GPa, an ultimate tensile strength of about 500 MPa and a maximum elongation of 6%. © 2015 Elsevier Ltd.


Geandier G.,CNRS Jean Lamour Institute | Dehmas M.,CNRS Jean Lamour Institute | Mourot M.,CNRS Jean Lamour Institute | Aeby-Gautier E.,CNRS Jean Lamour Institute | And 3 more authors.
Materials Science Forum | Year: 2014

In situ high energy X-ray diffraction synchrotron was used to provide direct analysis of the transformation sequences in steel-based matrix composite (MMC) reinforced with TiC particles. Evolution of the phase fractions of the matrix and TiC particles as well as the mean cell parameters of each phase were determined by Rietveld refinement from high energy X-ray diffraction (ID15B, ESRF, Grenoble, France). In addition, some peaks were further analysed in order to obtain the X-ray strain during the cooling step. Non-linear strain evolutions of each phase are evidenced, which are either associated with differences in the coefficient of thermal expansion (CTE) between matrix and TiC particle or to the occurrence of phase transformation. Micromechanical calculations were performed through the finite element method to estimate the stress state in each phase and outline the effects of differences in CTE and of volume change associated with the matrix phase transformation. The calculated results led to a final compressive hydrostatic stress in the TiC reinforcement and tensile hydrostatic stress in the matrix area around the TiC particles. Besides, the tendencies measured from in situ synchrotron diffraction (mean cell parameters) matched with the numerical estimates. © (2014) Trans Tech Publications, Switzerland.


L'EBITDA est en forte progression en 2016 (375 M€ vs. 92 M€ en 2015), traduisant les effets du plan de réduction des coûts et d'amélioration de la productivité dans tout le Groupe. Le résultat opérationnel courant du Groupe est en très forte progression au 2nd semestre 2016, à 175 M€ vs. une perte de 91 M€ au 1er semestre 2016. Le résultat opérationnel courant de l'année 2016 est ainsi redevenu significativement positif, à 84 M€. Dans ce contexte de crise sans précédent, et conformément à ce qui a été annoncé au début de l'année 2016, ERAMET Nickel a très fortement réagi : la SLN a mis en oeuvre un plan spécifique de réduction des coûts et d'amélioration de la performance opérationnelle avec pour objectif de diminuer de 25 % son cash-cost par rapport à la moyenne de 2015, pour atteindre 4,5 USD/lb fin 2017, en rythme annuel, aux conditions économiques de début 2016. En ligne avec cet objectif, le cash-cost moyen de l'année 2016 de la SLN s'établit à 5,06 USD/lb, en diminution de 16 % par rapport à la moyenne de 2015, à conditions économiques identiques. L'impact cumulé sur le résultat opérationnel courant du plan 2014-2017 de réduction des coûts et d'amélioration de la productivité pour ERAMET Nickel est de 142 M€ fin 2016. La production métallurgique de nickel à Doniambo (Nouvelle-Calédonie) s'est établie à 55 227 tonnes de nickel, en hausse de 1 858 tonnes par rapport à 2015. La mise en oeuvre du plan de réduction du cash-cost à la SLN a conduit la SLN à arrêter sa production de matte de nickel en août 2016 pour se spécialiser exclusivement sur la production de ferronickel SLN25, produit à forte valeur ajoutée et très apprécié des producteurs d'acier inox. Parallèlement, la reconfiguration industrielle de la raffinerie de nickel de Sandouville (Seine-Maritime), qui transformait jusqu'à présent la matte de nickel de la SLN en sels de nickel et nickel métal, est en cours. Dès le second semestre 2017, après épuisement des stocks de matte calédonienne, la raffinerie sera alimentée par une nouvelle source européenne de matte de nickel. Enfin, dans le cadre de son programme de cessions d'actifs, ERAMET a annoncé le 9 décembre 2016 la signature d'un accord en vue de la cession d'Eurotungstene (développement, production et commercialisation de poudres métalliques et de poudres pré-alliées) à Umicore. La clôture de la transaction est subordonnée à l'obtention de certaines autorisations réglementaires et devrait intervenir, sous cette réserve, au cours du premier semestre 2017. In fine, le résultat opérationnel courant d'ERAMET Nickel, bien que toujours négatif, a significativement progressé pour s'établir à -119 M€ vs.- 261 M€ en 2015, alors même que la moyenne des prix du nickel était de 4,35 USD/lb en 2016 vs. 5,37 USD/lb en 2015. ERAMET Alliages poursuit la structuration de ses activités dans le domaine du titane aéronautique avec l'inauguration de MKAD, partenariat entre Aubert & Duval et Mecachrome, en octobre 2016. MKAD fournit des pièces usinées en titane et complète ainsi la filière titane aéronautique d'ERAMET Alliages. UKAD, joint-venture entre Aubert & Duval et UKTMP pour le forgeage de lingots de titane aéronautique a poursuivi son développement. Enfin, EcoTitanium, première filière de recyclage de titane de qualité aéronautique en Europe, a démarré son four plasma le 3 février 2017. Depuis le retrait de Mitsubishi Corporation en avril 2016, ERAMET détient 100 % de Strand Minerals Pte Ltd qui contrôle elle-même 90 % de la société indonésienne de projet et d'exploration PT Weda Bay Nickel. Le gisement de Weda Bay est l'un des plus importants gisements de nickel au monde, dont les ressources mesurées, indiquées et supposées sont estimées à plus de 9,3 millions de tonnes de nickel. Le Conseil d'administration d'ERAMET a approuvé le 23 février 2017 les termes de l'accord-cadre signé avec le groupe sidérurgique chinois Tsingshan, 1er producteur mondial d'acier inoxydable, en vue de déterminer les conditions d'un partenariat pour la valorisation de cet actif. Ce partenariat consisterait à produire, en Indonésie, à partir du minerai de Weda Bay, selon un procédé pyrométallurgique un ferroalliage de nickel pour un volume d'environ 30 000 tonnes de nickel contenu par an. Ce partenariat se traduirait alors par l'entrée du groupe Tsingshan dans Strand Minerals Pte Ltd. ERAMET détiendrait 43 % du capital et le groupe Tsingshan 57 %. L'année 2016 a permis de réaliser des essais pilote à plus grande échelle du procédé développé pour la valorisation du gisement argentin d'ERAMET et d'avancer dans les études d'ingénierie de pré-faisabilité. L'année 2017 sera consacrée à des pilotages sur de plus longues durées, à la finalisation des études d'ingénierie et aux évaluations technico-économiques d'une éventuelle installation industrielle. « Les résultats du groupe ERAMET se sont fortement redressés en 2016, avec un EBITDA en très nette amélioration à 375 M€, un résultat opérationnel courant à 84 M€ et un free cash-flow positif de 226 M€ au 2nd semestre 2016. Ces performances sont dues en grande partie au succès du plan très ambitieux de réduction des coûts et d'amélioration de la productivité dans tout le Groupe et à la réalisation de l'essentiel de notre programme de cessions d'actifs.


A recovery strategy which gives the expected results: a strong improvement in the ERAMET group performance in 2016 ERAMET's Board of Directors, met on 23 February 2017 under the chairmanship of Patrick BUFFET and approved the financial statements for FY 2016[3]. The 2016 financial statements will be submitted for approval at the General Meeting on 23 May 2017. *Adjusted data from Group reporting, in which joint ventures are accounted for using proportionate consolidation. The reconciliation with the published financial statements is presented in Appendix. 2016 was a year of stark contrast in the metals markets. 2015 trends continued into the first half of 2016, with prices at historic 15-year lows, especially for nickel and manganese, against the backdrop of the worst crisis in this industry in decades. In contrast, the second half of the year 2016 saw nickel prices nudge upward, followed by a strong rise in manganese prices at the end of the year. In this environment, ERAMET sales rose 17% between H1 and H2 2016. Sales for full-year 2016 came in at €2,984 million (down 4% year-on-year). Reflecting the success of the cost reduction and productivity plan rolled out in the Group, EBITDA made strong gains in 2016 (increasing to €375 million from €92 million in 2015). The Group's current operating income rose sharply in H2 2016 to €175 million from a loss of €91 million in H1 2016. Current operating income for 2016 was significantly positive at €84 million. Net income, Group share before impairment was -€43 million, a big improvement relative to 2015. After impairment, net income, Group share stood at -€179 million (vs. -€714 million in 2015), including impairment of assets and tax receivables amounted to €136 million vs. €548 million in 2015. Capital expenditure was €217 million, down 19% relative to 2015 and 37% relative to 2014, acting on the 2015 decision to limit capital expenditure essentially to safety and maintenance of industrial units. At €226 million, Free Cash-Flow turned positive in the second half of 2016. Net debt came out at €836 million at 31 December 2016, falling a substantial €327 million (-28%) from 30 June 2016 (€1,163 million) and by €42 million compared with 31 December 2015. The net debt to equity ratio improved year-on-year from 49% to 47%. The net debt to EBITDA ratio was 2.2, a very big improvement relative to 9.5 at 31 December 2015. At end-September, ERAMET increased its equity by €100 million through the issue of net share settled undated bonds convertible into new shares (ODIRNAN). The asset disposals program carried out in 2016 had a positive €142 million impact on the Group net debt. Disposals concerned ERACHEM (manganese chemicals), Somivab (forestry operation in Gabon) and Bear Metallurgical (vanadium and molybdenum metallurgy in the USA). The disposal of Eurotungstene (cobalt and alloys powders) is expected to take place in the first half of 2017, following the signature of an agreement in 2016. The ERAMET group financial liquidity remained high at €1.7 billion at 31 December 2016, including €981 million in revolving credit, drawn in early January 2016. ERAMET announced on 17 January 2017 that it was extending the maturity of its revolving credit facility by two years. The Board of Directors will propose to the General Shareholders' Meeting on 23 May 2017 that no dividend be paid in respect of 2016. World stainless steel output - the main market for nickel - staged a very strong rebound in 2016 relative to 2015, with growth of approximately 9%. A number of contradictory supply signals continued to weigh on the nickel market: Against this backdrop and despite robust global demand, very high nickel inventories were maintained with stocks edging down only slightly in 2016 and remaining at high levels. Stocks at the LME (London Metal Exchange) and the SHFE (Shanghai Futures Exchange) totalled 466,000 tonnes at the end of December, down only 24,000 tonnes from their 2015 level. Average LME nickel prices were at an historically low level of USD 3.93/lb in H1 2016. Average prices in H2 2016 were up 22% compared with the first half to USD 4.78/lb. For the full year, average nickel prices were down 19% from 2015 level (USD 4.35/lb vs. USD 5.37/lb). In this environment, ERAMET Nickel took determined measures in response to this unprecedented crisis. As announced early in 2016: SLN implemented a specific plan to lower costs and improve operating performance. The target under the plan is to cut its cash-cost to USD 4.5/lb by the end of 2017, a reduction of 25% relative to the average in 2015, on an annual basis and under the economic conditions at the start of 2016. In line with this target, SLN's average cash-cost in 2016 was USD 5.06/lb, 16% lower than the average in 2015, under identical economic conditions. At the end of 2016, ERAMET Nickel 2014-2017 cost reduction and productivity improvement plan delivered a cumulated impact on current operating income of €142 million. ERAMET provided €325 million in financial support in order for SLN to implement the plan as well as to ensure continuity of operations, while the French government contributed €200 million. Both contributions took the form of 8-year loans. The plan selected for the supply of electricity to the Doniambo plant in New Caledonia is a new plant on the island powered by natural gas. The investment project will be operated by the newly created Caledonian Energy Agency and will have no impact on ERAMET's balance sheet. Most of the bank financing will be guaranteed by the French government according to the measures approved in the French parliament in December 2016, in accordance with European regulations. Nickel metallurgical production at the Doniambo plant (New Caledonia) increased to 55,227 tonnes of Ni, up 1,858 tonnes relative to 2015. As part of its plan to cut its cash-cost, SLN halted production of nickel matte in August 2016 to be exclusively specialised in the production of high value-added SLN25 ferronickel, a product much in demand by the stainless steel industry. At the same time, ERAMET has begun the process of reconfiguring the Sandouville nickel refinery (in Seine-Maritime, France), which had been refining SLN nickel matte into nickel salts and nickel metal. Once the stocks of Caledonian matte have been depleted, feedstock for the refinery will be from a new European nickel matte source starting from the second half of 2017. Finally, on 9 December 2016, ERAMET announced the signature of an agreement for the sale of Eurotungstene (specialised in developing, manufacturing and marketing metal and pre-alloyed powders) to Umicore as part of its asset disposals program. Closing of the transaction is subject to certain regulatory approvals and, provided these approvals are obtained, is expected to occur in the first half of 2017. Although ERAMET Nickel continues to post a current operating loss, performance improved significantly to -€119 million from -€261 million in 2015, despite the fall in average nickel prices to USD 4.35/lb in 2016, from USD 5.37/lb in 2015. The aerospace sector continues to benefit from steady growth and accounted for close to 65% of ERAMET Alloys sales. ERAMET Alloys is a strong player for new aircraft manufacturer programs that require high value-added parts for structures and engines. Taken as a whole, the productivity improvement and cost reduction plans implemented by ERAMET Alloys have had a €75 million cumulative annual impact on current operating income since 2014. In the fourth quarter of 2016, Aubert & Duval announced a project to close the steel mill in Firminy (Loire, France) and consolidate its high-performance steel processing at Ancizes (Puy de Dôme, France). According to this project, the Firminy site will specialise in forging, heat treatment and machining. ERASTEEL's Commentry (Allier, France) plant began operating spent catalysts and batteries recycling facilities in early 2017, in synergy with the existing steel mill, opening up a new market segment that will be gradually ramped up in the course of 2017. ERAMET Alloys is very actively developing new products for its customers in the aerospace and energy sectors, with the emergence of new grades of special steels. In high-speed steels sectors, developments focus on improving the value in use of products for customers in the cutting tools industry. ERAMET Alloys continues to structure its activities in aerospace grade titanium and started the MKAD plant, the partnership between Aubert & Duval and Mecachrome, in October 2016. Supplying machined titanium parts, MKAD completes ERAMET Alloys aerospace grade titanium supply chain. UKAD, the joint venture between Aubert & Duval and UKTMP, continued to grow. The joint venture specialises in forging aerospace titanium ingots. EcoTitanium, the first aerospace grade titanium recycling operation in Europe, started its plasma furnace on 3 February 2017. ERAMET Alloys is also continuing to expand into the powder metallurgy market with the certification of its Spanish plant and the start of the construction of a new atomising tower in Les Ancizes (Auvergne, France), which will increase deliveries of alloys powders for the Rafale fighter jet program and will strengthen its positioning in the emerging additive manufacturing segment. World production of carbon steel, which is the main market for manganese, edged up in the year by approximately 0.8% from 2015 level helped by a loosening of credit in China, which in turn led to a resumption of major construction programs and a lowering of steel stocks at producers. China alone accounted for 50% of global carbon steel production in 2016. As a result, CIF China 44% manganese ore prices (source: CRU) also fluctuated sharply during 2016: 2016 prices averaged at USD 4.30/dmtu, from an average of USD 3.11/dmtu in 2015. Since summer 2016, Manganese alloy prices have also trended upwards. Against this background, ERAMET Manganese halted production for one month in the first quarter of 2016. With this adjustment, annual production was 3.4 million tonnes transported in 2016. ERAMET Manganese ore production rose to a record 3.9 million tonnes transported in 2015. The final terms and conditions of the financing plan for the renovation of Setrag (the Transgabonese railway concession operator) were agreed by both the Gabonese government and COMILOG. 2017 will see the beginning of the first step of the multi-year works program. The cost reduction and productivity improvement plans implemented by ERAMET Manganese delivered a cumulative annual impact of €81 million on current operating income since 2014, relative to 2013. These gains were amplified by additional plans implemented in COMILOG and ERAMET Norway during 2016. As part of its asset disposals program, ERAMET disposed ERACHEM (manganese chemicals), Somivab (forestry operation in Gabon) and Bear Metallurgical (vanadium and molybdenum metallurgy in the USA). The impact of the disposals on the Group's net debt comes out at €142 million. Low prices at the start of 2016 caused supply to contract across the titanium dioxide value chain with a resulting rebalancing in the titanium dioxide pigment markets. Finished product prices recovered strongly in 2016, but did not rise back up to 2013 levels. Further up this value chain, the outlook continues to be positive for the products produced by TiZir (ilmenite and titanium dioxide slag for chloride processes), although excess capacity in the chloride slag sector may limit the price increase potential for this product in the short term. Regarding zircon, after a decrease in prices in the first half of 2016, prices remained stable until the end of 2016. Some producers announced a slight increase in prices at the end of the year, demonstrating market stabilisation. Production of heavy mineral concentrate (HMC) in Senegal came out at 614,000 tonnes in full-year 2016, with record production of 194,000 tonnes in Q4. The mine's operational efficiency met expectations. An agreement was reached with the insurance company to pay USD 35 million in total compensation, following a fire in the furnace of the TiZir plant in Norway on 15 August 2016. The refractory relining was successfully completed at the end of 2016 and the facility came back on stream on 7 January 2017. TiZir posted positive €16 million in EBITDA in 2016, demonstrating its capacity to generate value, despite overall stable prices for mineral sands and the furnace incident in Norway. After the put option exercised by Mitsubishi Corporation in April 2016, ERAMET holds a 100% stake in Strand Minerals Pte Ltd which owns 90% of the Indonesian project and exploration company, PT Weda Bay Nickel. The Weda Bay deposit is one of the largest nickel deposits in the world. Its measured, indicated, and inferred resources are valued at more than 9.3 million tonnes of nickel. On 23 February 2017, the ERAMET Board approved the terms of the Memorandum Of Understanding signed with the Chinese steel producer group Tsingshan, the leading world steel producer. The Memorandum Of Understanding establishes the conditions for a partnership to develop this asset. The partnership would entail producing a nickel ferroalloy from Weda Bay ore in Indonesia based on a pyrometallurgical process, for a nameplate capacity of 30,000 tonnes of nickel per year. This partnership would be reflected by the entry of Tsingshan group in Strand Minerals Pte Ltd. ERAMET would hold 43% of the shares and Tsingshan group 57%. Larger scale pilots were conducted in 2016 to test the process developed for ERAMET's deposit in Argentina, and engineering and pre-feasibility studies have progressed during the year. In 2017, the project will concentrate on pilots over a longer term, and will finalise engineering studies and carry out technical and economic assessments of a possible industrial facility. As it intensifies its cost reduction and productivity improvement plans throughout the Group, ERAMET is raising its target for recurring savings on current operating income from €360 million to €400 million.[4] In addition, over and above the cash-cost target of USD 4.5/lb set for end-2017, ERAMET Nickel and SLN are currently examining the potential for achieving a further significant cash-cost reduction target in SLN (by the end of 2020), excluding the impact of the expected major contribution of the new power plant, scheduled to be operational in 2021. SLN's new cash-cost objectives by the end of 2020 will be announced in July 2017. At the conclusion of the Board meeting, Patrick BUFFET said: "ERAMET Group results staged a strong recovery in 2016, with a very sharp improvement in EBITDA to €375 million, positive current operating income at €84 million, and positive Free Cash-Flow of €226 million in the second half of 2016. This performance is mainly due to the success of the very ambitious plan to reduce costs and improve productivity throughout the Group and the completion of most of our asset disposals program. ERAMET's balance sheet structure also improved, notably thanks to the successful issue in September 2016 of net share settled undated bonds convertible into new shares (ODIRNAN) and the two-year maturity extension to our revolving credit facility. The Group net debt fell by almost 30% relative to end-June 2016 and was lower than the net debt at the end of 2015. The net debt to EBITDA ratio was 2.2 at end-2016, a very big improvement relative to 9.5 at end-2015. It is important to stress that the performance plans implemented confirm the high quality of ERAMET's industrial results: 2017 will be a very important year on several fronts, most notably: With uncertainty as a major theme of the coming year, particularly with regard to developments in the Chinese economy, it is crucial for ERAMET to maintain its unflagging policy of rigour and vigilance to continuously improve our performance and consolidate our position in the face of ever more aggressive competition in a rapidly evolving international environment. ERAMET's recovery in 2016 has only been possible with the commitment of all the men and women in the Group. I would like to take this opportunity to congratulate them personally. Their engagement fully justifies my confidence in our success in the future." Presentation of the 2016 annual results will be webcast on 24 February 2017 at 10:00 (CET), in French with simultaneous translation into English. To sign up, please click the link on the Group's website (www.eramet.com) or on the ERAMET Finance app. ERAMET is also developing new activities with high growth potential, such as mineral sands (titanium dioxide and zirconium), lithium and recycling. For more information: www.eramet.com Follow us with the ERAMET Finance mobile app: Statement of changes in net debt (1)       Financial statements prepared under applicable IFRS, with joint ventures accounted for using equity method See 2016 consolidated financial statements on the ERAMET website (www.eramet.com). (2)       Group reporting, in which joint ventures are accounted for using proportionate consolidation. [1] Cumulated impact on the current operating income, relative to 2013. [2] The sum of net cash generated by operating activities and from investments and disposals. [3] The audit of the 2016 consolidated financial statements is complete and the auditor's report is being prepared. [4] On an annual basis at the end of 2017, benchmarked against 2013 under the 2014-2017 plan.


Lorong P.,Arts et Metiers ParisTech | Larue A.,Mecachrome | Perez Duarte A.,SNECMA
Advanced Materials Research | Year: 2011

The numerical simulation of machining process is a key factor in the control of parts machining process. Its development aims at improving the process reliability and reduces the time spent during the process planning stage. In this context, we use a specific time domain simulation allowing modeling the dynamics of a thin wall part turning operation. After having introduced the basics of the proposed approach we present a specific cutting test that has been designed to specifically measure and control the dynamics of the part and the cutting conditions of a finishing toolpath. The influences of the cutting speed and damping coefficient on the chatter occurrence are discussed. In order to better control the simulation uses, an analysis of the simulation parameters influences on the simulated results is proposed. © (2011) Trans Tech Publication.


Idarraga-Trujillo I.,CEA Saclay Nuclear Research Center | Le Flem M.,CEA Saclay Nuclear Research Center | Brachet J.-C.,CEA Saclay Nuclear Research Center | Le Saux M.,CEA Saclay Nuclear Research Center | And 8 more authors.
LWR Fuel Performance Meeting, Top Fuel 2013 | Year: 2013

Significant improvement in the safety of light water reactors should be achieved by the use of alternative cladding materials which are more robust than those currently serving as the first fuel containment barrier, in Loss of Coolant Accident (LOCA) and beyond-LOCA conditions. CEA is assessing the solution of a coated cladding aiming to protect the current zirconium alloy cladding from high temperature steam oxidation. The present paper particularly focuses on some recent results obtained at CEA on Cr coated Zircaloy-4 base materials that have experienced several hours exposure under steam at 1000°C ("post-breakaway" conditions for the bare Zircaloy-4 material).


Voisin T.,CNRS Toulouse Center for Materials Elaboration and Structural Studies | Durand L.,CNRS Toulouse Center for Materials Elaboration and Structural Studies | Karnatak N.,Mecachrome | Le Gallet S.,Laboratory Interdisciplinaire Carnot de Bourgogne | And 4 more authors.
Journal of Materials Processing Technology | Year: 2013

The determination and the homogeneity of the sample temperature during consolidation of powders by Spark Plasma Sintering (SPS) are addressed. Densifications were carried out in three different facilities differing by their constructors and their size. A structural transformation activated in a TiAl alloy was used as a marker of the sample temperature and finite element modeling were performed to evaluate the temperature at each point of the set-up. A good agreement between experimental and simulated data is exhibited. Alloys with identical microstructures were sintered and the homogeneity of the microstructure was better in the largest machines or when the sample was isolated by alumina disks. Large specimens with a diameter of 100 mm and a height of 60 mm were sintered, with the aim to achieve full densification and good microstructural control. On the basis of this temperature mastering, samples with complex shape were successfully densified. SEM post mortem observations confirmed the absence of porosities, and the expected microstructure as predicted by FEM calculations. © 2012 Elsevier B.V.


Voisin T.,CNRS Toulouse Center for Materials Elaboration and Structural Studies | Monchoux J.-P.,CNRS Toulouse Center for Materials Elaboration and Structural Studies | Durand L.,CNRS Toulouse Center for Materials Elaboration and Structural Studies | Karnatak N.,MECACHROME | And 2 more authors.
Advanced Engineering Materials | Year: 2015

A study is conducted to show that the production of turbine blades in γ-TiAl alloys through spark plasma sintering (SPS) is a viable manufacturing route, by demonstrating that near-net shaping of γ-TiAl blades is successful, and by developing an alloy with balanced and outstanding mechanical properties at room and high temperatures in a single run and without subsequent thermal treatments. It is demonstrated that replacing nickel-based superalloys by such Intermetallic γ-TiAl alloys with high specific modulus and mechanical strength, combined with an exceptional resistance to oxidation, is an effective contribution to the development of lighter aircraft engines with high performance. Casting processes such as centrifugal cast have demonstrated that sound TiAl parts with a complex shape such as low-pressure turbine blades can be achieved.

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