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Huntington, WV, United States

Special Metals Corporation, headquartered in New Hartford, New York, U.S.A., with operations in Huntington, West Virginia; Dunkirk, New York; Burnaugh, Kentucky; Elkhart, Indiana and Hereford, England, is a supplier of refractory alloys. Trademarks include Inconel, Incoloy, Monel, Nimonic, and Udimet. The company acquired Inco Alloys International from Inco in 1998.In 2006, Special Metals was acquired by Precision Castparts Corporation of Portland, Oregon.In November 2012, it was announced TIMET was being purchased for $2.9 billion by Precision Castparts. Wikipedia.

Mannan S.,Special Metals Corporation
7th International Symposium on Superalloy 718 and Derivatives 2010 | Year: 2010

Commercially produced INCOLOY® alloy 945 was annealed and heat-treated in the temperature range of 650°C to 982°C for the times of 15 minutes to 100 hours. Heat-treated specimens were tested for hardness, optical metallography, scanning electron microscopy (SEM), energy dispersive x-ray (EDX) analysis of bulk and electrolytically extracted residue, x-ray diffraction (XRD) of the residue and transmission electron microscopy (TEM) to develop understanding for phase stability. Data generated from these analytical techniques is presented in the form of a time-temperature-transformation diagram (TTT).

Young K.,Energy Conversion Devices Inc. | Ouchi T.,Energy Conversion Devices Inc. | Banik A.,Special Metals Corporation | Koch J.,Energy Conversion Devices Inc. | Fetcenko M.A.,Energy Conversion Devices Inc.
International Journal of Hydrogen Energy | Year: 2011

The effects of high temperature hydrogen annealing were studied on powders made by gas atomization of both conventional vanadium-containing AB2 metal hydride alloys and new vanadium-free AB2 alloys designed for high power and low self-discharge applications. In both alloy systems, annealing in 950 °C hydrogen for 30 min was proven to be effective in improving the capacity, formation, high power, and low temperature performance in the nickel metal hydride battery compared to previous gas atomization trials where each property was reduced. The advantage in improving the cycle life by gas atomization was further extended by the hydrogen annealing process. Reduction in the surface oxide was confirmed by the use of Auger electron spectroscopy depth profiling and magnetic susceptibility. Metallic elements were reduced from the oxide state by hydrogen to react with the metallic nickel particulates originally embedded in the surface oxide in a high temperature environment and created a new surface free of oxygen. © 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Mannan S.,Special Metals Corporation
NACE - International Corrosion Conference Series | Year: 2012

A newly developed alloy 945X has nominal composition of Fe-53.5Ni-20.5Cr-3Mo-2Cu-4Nb-1.5Ti. The alloy provides 140 ksi (965 MPa) minimum yield strength with an excellent combination of ductility and impact strength in the solution treated and aged condition. Alloy 945X is incorporated in NACE MR0175 / ISO 15156 -3 for level VII and level VI at 450°F (232C°). This paper covers alloy 945X capabilities for mechanical properties and microstructure. Results are presented on slow strain rate testing (SSRT) on a range of yield strengths and dimensions for rod product. Mechanical properties and corrosion resistance of mechanical tubes are also presented. This data on SSRT is compared with other high strength alloys. In addition, SSRT data and C-ring data of precipitation strengthened alloys is compared in the same environmental conditions. ©2012 by NACE International.

Young K.,Energy Conversion Devices Inc. | Ouchi T.,Energy Conversion Devices Inc. | Banik A.,Special Metals Corporation | Koch J.,Energy Conversion Devices Inc. | And 4 more authors.
Journal of Alloys and Compounds | Year: 2011

Gas atomization together with a hydrogen annealing process has been proposed as a method to achieve improved low-temperature performance of AB 5 alloy electrodes in Ni/MH batteries and restore the original cycle life which was sacrificed by the incorporation of copper in the alloy formula. While the gas atomization process reduces the lattice constant aspect ratio c/a of the Cu-containing alloys, the addition of a hydrogen annealing step recovers this property, although it is still inferior to the conventionally prepared annealed Cu-free alloy. This observation correlates very well with the cycle life performance. In addition to extending the cycle life of the Cu-containing metal hydride electrode, processing by gas atomization with additional hydrogen annealing improves high-rate, low-temperature, and charge retention performances for both Cu-free and Cu-containing AB5 alloys. The degradation mechanisms of alloys made by different processes through cycling are also discussed. © 2011 Elsevier B.V. All rights reserved.

Busch J.D.,Purdue University | Debarbadillo J.J.,Special Metals Corporation | Krane M.J.M.,Purdue University
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science | Year: 2013

Electroslag remelted (ESR) ingots of INCOLOY alloys 800 and 825 are particularly prone to macroscale slag inclusions and microscale cleanliness issues. Formation of these structures near the ingot surface can cause significant production yield losses (∼10 pct) due to the necessity of extensive surface grinding. Slag inclusions from near the outer radius of the toe end of alloy 800 and 825 ingots were found to be approximately 1 to 3 mm in size and have a multiphase microstructure consisting of CaF2, CaTiO3, MgAl2O4, MgO, and some combination of Ca12Al14O32F2 and/or Ca 12Al14O33. These inclusions were often surrounded by fields of 1- to 10-μm cuboidal TiN particles. A large number of TiN cuboids were observed in the ESR electrode with similar size and morphology to those observed surrounding slag inclusions in the ESR ingots, suggesting that the TiN particles are relics from the ESR electrode production process. Samples taken sequentially throughout the AOD processes showed that the TiN cuboidals that are found in ESR ingots form between tapping the AOD vessel into the AOD ladle and the casting of ESR electrodes. © 2013 The Minerals, Metals & Materials Society and ASM International.

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