Selective appearance of ε-martensitic transformation and dynamic strain aging in Fe-Mn-C austenitic steels

被引：28

作者：

Koyama, Motomichi ^{[1
,2
]}

Sawaguchi, Takahiro ^{[2
]}

Tsuzaki, Kaneaki ^{[1
,2
]}

机构：

[1] Univ Tsukuba, Doctoral Program Mat Sci & Engn, Tsukuba, Ibaraki 3050047, Japan

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

PHILOSOPHICAL MAGAZINE | 2012年 / 92卷 / 24期

基金：

日本学术振兴会;

关键词：

martensitic transformation; Fe-based alloy; planar defect; stress-strain measurement; tensile testing; dynamic strain aging; austenitic steel; solution hardening; STACKING-FAULT ENERGY; FCC->HCP TRANSFORMATION; DISLOCATION DENSITIES; PLASTIC-DEFORMATION; SINGLE-CRYSTALS; STAINLESS-STEEL; TEMPERATURE; MECHANISM; ALLOYS; NUCLEATION;

D O I：

10.1080/14786435.2012.685769

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of stress-induced epsilon-martensitic transformation on the serrated flow behavior associated with dynamic strain aging was investigated. The epsilon-martensitic transformation was controlled by changing the deformation temperature and adding Si to Fe-17Mn-xSi-0.3C alloys. The addition of Si promoted the epsilon-martensitic transformation, and suppressed the slip deformation due to solution hardening. The initiation of serrations around room temperature was delayed by the promotion of epsilon-martensitic transformation which initiated plastic deformation. The critical stress for the occurrence of serrations and the critical stress for the occurrence of slip deformation were found to have a linear relationship.

引用

页码：3051 / 3063

页数：13

共 35 条

[1] Thermally activated dislocation dynamics in austenitic FeMnC steels at low homologous temperature [J].