Effect of Carbon Fraction on Stacking Fault Energy of Austenitic Stainless Steels |
| |
Authors: | Tae-Ho Lee Heon-Young Ha Byoungchul Hwang Sung-Joon Kim Eunjoo Shin |
| |
Affiliation: | 1. Ferroy Alloy Department, Korea Institute of Materials Science, Changwon, 642-831, South Korea 2. Graduate Institute of Ferrous Technology, Pohang University of Science & Technology, Pohang, 790-784, South Korea 3. Neutron Physics Department, Korea Atomic Energy Research Institute, Daejeon, 305-600, South Korea
|
| |
Abstract: | 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/m2)?=??C5.97?+?39.94(wt pct C?+?N)?+?3.81(C/N). As C fraction increased, the strain-induced ?????? martensitic transformation was suppressed, and deformation twinning became the primary mode of plastic deformation. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|