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Li P.-Z.,HIGH-TECH | Li P.-Z.,Baotou Huamei RE Products Co. | Cai J.,Baotou Iron and Steel Vocational Technical College | Ma L.,Hebei University of Engineering | Li Y.-M.,Inner Mongolia University of Science and Technology
Chinese Rare Earths | Year: 2015

3.0Si-0.8Al-0.0062Ce non-oriented silicon steel were produced by the CSP process. The structure, texture and inclusion in the hot rolled sheet were analyzed in detail. The results showed that the structure in the hot rolled strip was recrystallized microstructure at edge and fibrous structure with a few recrystallized microstructure in the central. The main texture in the surface layer was {110) <115> and (113) <332>, and in the center layer was wake {111} texture and strong rotate cube. The main inclusions in the hot rolled strip was Ce + Al2O3 composite precipitates and rare earth activated oxysul-fide. © 2015, Editorial Office of "Chinese Rare Earths". All right reserved.


Wang X.L.,University of Science and Technology of China | Wang X.L.,Baotou Iron and Steel Vocational Technical College | Bo S.,University of Science and Technology of China | Li Y.B.,Inner Mongolia University of Science and Technology | And 4 more authors.
Applied Mechanics and Materials | Year: 2013

The corrosion of heavy rail steel is severity in south. Now there are not studies on the corrosion of heavy rail steel in atmosphere. The corrosion of heavy rail steel were studied by periodic infiltration corrosion test and electro-chemical testing technique in simulated industrial atmospheof the rust layer against the corrosive media from entering the layer was improvre. The result showed that U76CrRE has apparently more excellent anti-corrosion ability than that of steel U75V. The Cr and Re in U76CrRE enriched in local of base that promotes the rapid generation of α -FeOOH and the increase of content. Thus the ability ed. Anti-corrosion capacity of heavy railroad steel in industrial atmosphere can be improved significantly by adding Cr and RE alloy. © (2013) Trans Tech Publications, Switzerland.


Wang X.-L.,University of Science and Technology Beijing | Wang X.-L.,Baotou Iron and Steel Vocational Technical College | Song B.,University of Science and Technology Beijing | An S.-L.,University of Science and Technology Beijing | And 3 more authors.
Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | Year: 2014

The corrosion behavior of rare earth (RE) heavy rail steel was studied by a cycle infiltration corrosion test and an electrochemical technique under simulated industrial atmosphere. The results show that RE heavy rail steel has more excellent anticorrosive property than the other none-RE heavy rail steel. In RE heavy rail steel, α-FeOOH phase quickly forms and content increase in rust layer due to the enrichment of RE alloy elements in the matrix, RE alloy elements improve the ability of rust layer to prevent erosion of corrosive agent penetration, which improves the corrosion resistance of the heavy rail steel in industrial atmosphere.


Huang Y.,Baotou Iron and Steel Vocational Technical College | Huang Y.,Inner Mongolia University of Science and Technology | Bai Q.,Inner Mongolia University of Science and Technology | Wang H.,Inner Mongolia University of Science and Technology | And 3 more authors.
Jinshu Rechuli/Heat Treatment of Metals | Year: 2015

In order to investigate the effect of quasi-equilibrium process on liquidus and peritectic reaction temperature, solidification phase transformation and high temperature solidification microstructure of Q345D low carbon steel were studied by differential thermal analyzer and self-designed high temperature phase transformation solidification test device. The results show that, compared with equilibrium solidification phase transition, near-equilibrium solidification with cooling rate 20 and 30℃/min, the formation temperature of primary ferrite decreases 56 and 88℃ respectively. In addition, the temperature of peritectic transformation decreases 29 and 68℃ respectively. The near-equilibrium solidification occurs above liquidus, the solidification structure of metals is austenitic formed directly, near-equilibrium solidification proceed at the temperature of peritectic transformation, the peritectic transformation does not occur completely, the microstructure of intracrystalline is acicular martensite and a small amount free ferrite in the grain boundary. When near-equilibrium solidification proceed in austenitic transition zone, the austenite grain grow up enough and peritectic transformation occurrs completely, at the same time, δ-ferrite is disappearance. ©, 2015, Chinese Mechanical Engineering Society of Heat Treatment. All right reserved.

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