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

页码：4455 / 4459

页数：5

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