Degradation Evaluation of Mechanical Property for Modified 9Cr-1Mo Steel by Reversible Permeability

被引：1

作者：

Bong, Chung-jong ^{[2
]}

Ryu, Kwon-sang ^{[1
]}

Nahm, Seung-hoon ^{[1
]}

Kim, Eun Kyu ^{[2
]}

机构：

[1] Korea Res Inst Stand & Sci, Taejon 305340, South Korea

[2] Hanyang Univ, Seoul 133791, South Korea

来源：

JOURNAL OF MAGNETICS | 2011年 / 16卷 / 01期

关键词：

degradation; modified 9Cr-1Mo steel; nondestructive evaluation; peak interval of reversible permeability (PIRP); MAGNETIC-PERMEABILITY; 1CR-1MO-0.25V STEEL; REMANENT LIFE;

D O I：

10.4283/JMAG.2011.16.1.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work studies a nondestructive evaluation of the degradation of modified 9Cr-1Mo steel using a magnetic method based on the existence of the peaks of reversible permeability (RP) in the differential magnetization around the coercive force. The apparatus is based on detection of the voltage induced in a coil using a lock-in amplifier tuned to the frequency of the AC perturbing field. Results obtained for the reversible permeability and Vickers hardness on the aged samples showed the peak interval of reversible permeability (PIRP) and Vickers hardness decrease as aging time increased. The correlation between Vickes hardness and the PIRP could be used to evaluate degradation of modified 9Cr-1Mo steel.

引用

页码：42 / 45

页数：4

共 12 条

[1]

Boll R., 1979, SOFT MAGNETIC MAT, P36

[2] Nondestructive evaluation for remanent life of modified 9Cr-1Mo steel by reversible magnetic permeability [J].