Infuence of Mg on Thermoplasticity of High-Temperature Stainless Bearing Steel Cr_(14)Mo_4  

作　　者：Wei Gong Cheng Wang Haidong Wang Zhouhua Jiang 

机构地区：[1]School of Materials & Metallurgy,Northeastern University

出　　处：《Journal of Materials Science & Technology》2013年第12期1204-1208,共5页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51174050);the Fundamental Research Project of the Ministry of Education of China (Grant No.N110402010);Liaoning Province High School Innovation Team Support Plan

摘　　要：Through the addition of appropriate amount of Mg （0.01-0.01 5 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.Through the addition of appropriate amount of Mg （0.01-0.01 5 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.

关 键 词：High-temperature stainless bearing steel MAGNESIUM THERMOPLASTICITY 

分 类 号：TG142.71[一般工业技术—材料科学与工程]