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

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• 作者：Wei Gong ; Cheng Wang ; Haidong Wang ; Zhouhua Jiang
• 关键词：High-temperature stainless bearing steel ; Magnesium ; Thermoplasticity
• 刊名：Journal of Materials Science & Technology
• 出版年：December, 2013
• 年：2013
• 卷：29
• 期：12
• 页码：1204-1208
• 全文大小：1955 K

文摘

Through the addition of appropriate amount of Mg (0.01-0.015聽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.