Effect of Isothermal Aging on the Magnetic Properties of 1Cr-0.5Mo Steel

被引：0
|
作者：
Kim, Min-gi [1 ,2 ]
Ryu, K. S. [1 ]
Lee, Y. H. [1 ]
Park, J. S. [1 ]
Kim, C. G. [2 ]
机构：
[1] Korea Res Inst Stand & Sci, Div Ind Metrol, Taejon 305340, South Korea
[2] Chungnam Natl Univ, Dept Mat Engn, Taejon 305340, South Korea
来源：
JOURNAL OF MAGNETICS | 2011年 / 16卷 / 03期
关键词：
1Cr-0.5Mo steel; coercivity; hysteresis loss; Rockwell hardness; carbide; isothermal aging; 1CR-1MO-0.25V STEEL;
D O I：
10.4283/JMAG.2011.16.3.225
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic properties and Rockwell hardness of 1Cr-0.5Mo steel have been investigated as a function of isothermal aging time. Our results showed that coercivity, hysteresis loss and Rockwell hardness in the aged samples decreased as aging time increased. This phenomenon was analyzed using optical microscopy and scanning electron microscopy. A significant diffusion of Cr and Mo atoms formed M(2)C and M(7)C carbides, lowering the matrix strength. M(2)C and M(7)C carbides partially segregated inside grains, diffused into grain boundaries, and finally resulted in a soft ferrite matrix and a hard grain boundary. The magnetic and mechanical softening of the matrix is likely to govern the properties of the sample more than the hardening of the grain boundary by carbide precipitations.
引用
收藏
页码：225 / 228
页数：4
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