Effect of elasto-plastic loading on the magnetic characteristics of steel 20 hardened with gas case-hardening

被引：0
|
作者：
E. S. Gorkunov
S. Yu. Mitropolskaya
E. M. Groznaya
A. N. Mushnikov
A. L. Osintseva
E. A. Tueva
机构：
[1] Russian Academy of Sciences,Institute of Engineering Science, Ural Division
来源：
Russian Journal of Nondestructive Testing | 2011年 / 47卷
关键词：
differential magnetic permeability; gas case hardening; elasto-plastic strain;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The evolution of the magnetic characteristics of case-hardened Steel 20 under the influence of elasto-plastic tensile, compressive, and torsional strains is analyzed. The field dependence of the differential magnetic permeability is shown to reflect a three-layer nature of the obtained micro-structure: a hardened surface layer, a transition zone, and a ferrite-pearlite core. It is proposed to evaluate the level of the applied stresses on the basis of the peak field and the height of the differential magnetic permeability peaks of corresponding layers of the case-hardened steel.
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页码：221 / 231
页数：10
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