Influence of Mg on Thermoplasticity of High-Temperature Stainless Bearing Steel Cr14Mo4

doi:10.1016/j.jmst.2013.10.029

J. Mater. Sci. Technol.

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Influence of Mg on Thermoplasticity of High-Temperature Stainless Bearing Steel Cr₁₄Mo₄

Wei Gong, Cheng Wang, Haidong Wang, Zhouhua Jiang

School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China

Received:2013-04-19 Revised:2013-06-21 Online:2013-12-30 Published:2013-12-24
Contact: W. Gong
Supported by:
National Natural Science Foundation of China (Grant No. 51174050), the Fundamental Research Project of the Ministry of Education of China (Grant No. N110402010)

Abstract

Abstract:

Through the addition of appropriate amount of Mg (0.01–0.015 wt%) to the stainless bearing steel Cr₁₄Mo₄, the high-temperature thermoplasticity of steel was improved. The mechanism has been uncovered that the added Mg plays an important role in refining and uniforming the carbide precipitations in the steel. It has been found that the segregation of trace Mg is the key to improve the dispersed carbide. Moreover, considerable segregation of Mg in steel during annealing was evidenced by the theoretic analysis.

Key words: High-temperature stainless bearing steel, Magnesium, Thermoplasticity

Wei Gong, Cheng Wang, Haidong Wang, Zhouhua Jiang. Influence of Mg on Thermoplasticity of High-Temperature Stainless Bearing Steel Cr₁₄Mo₄[J]. J. Mater. Sci. Technol., DOI: 10.1016/j.jmst.2013.10.029.

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Influence of Mg on Thermoplasticity of High-Temperature Stainless Bearing Steel Cr₁₄Mo₄

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