Effect of Carbon Fraction on Stacking Fault Energy of Austenitic Stainless Steels

被引：52
|
作者：
Lee, Tae-Ho [1 ]
Ha, Heon-Young [1 ]
Hwang, Byoungchul [1 ]
Kim, Sung-Joon [2 ]
Shin, Eunjoo [3 ]
机构：
[1] Korea Inst Mat Sci, Ferrous Alloy Dept, Chang Won 642831, South Korea
[2] Pohang Univ Sci & Technol, Grad Inst Ferrous Technol, Pohang 790784, South Korea
[3] Korea Atom Energy Res Inst, Neutron Phys Dept, Taejon 305600, South Korea
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2012年 / 43A卷 / 12期
关键词：
NITROGEN;
D O I：
10.1007/s11661-012-1423-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of C fraction (C/N) on stacking fault energy (SFE) of austenitic Fe-18Cr-10Mn steels with a fixed amount of C + N (0.6 wt pct) was investigated by means of neutron diffraction and transmission electron microscopy (TEM). The SFE were evaluated by the Rietveld whole-profile fitting combined with the double-Voigt size-strain analysis for neutron diffraction profiles using neutron diffraction. The measured SFE showed distinguishable difference and were well correlated with the change in deformation microstructure. Three-dimensional linear regression analyses yielded the relation reflecting the contribution of both C + N and C/N: SFE (mJ/m(2)) = -5.97 + 39.94(wt pct C + N) + 3.81(C/N). As C fraction increased, the strain-induced gamma ->epsilon martensitic transformation was suppressed, and deformation twinning became the primary mode of plastic deformation.
引用
收藏
页码：4455 / 4459
页数：5
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