Thermal Activation Analysis for Higher-Temperature Deformation of Gamma-Iron

被引：1
|
作者：
Armstrong, R. W. [1 ]
Balasubramanian, N. [2 ]
机构：
[1] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA
[2] VLN Prabuddhalaya, Bannerghatta PO, Bangalore 560083, Karnataka, India
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2018年 / 49A卷 / 08期
关键词：
PLAIN CARBON-STEELS; CONSTITUTIVE RELATIONS; DISLOCATION-MECHANICS; STRENGTH LEVELS; STRESS; BEHAVIOR;
D O I：
10.1007/s11661-018-4744-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Recent extension of Zerilli-Armstrong (Z-A) constitutive relations to higher temperature is assessed using yield strength measurements on 0.09 C steel covering the initial deformation behaviors of metastable and stable gamma-iron phases. Descriptions of temperature dependence of yield stress; stress-dependent activation energy; and, activation area agree with the Z-A formulation. The relatively weaker thermal dependence of fcc strain hardening compared to a stronger thermal dependence of yield stress for bcc metals is pointed out.
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页码：3157 / 3160
页数：4
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