工程科学学报Issue(8)：1023-1028,6.DOI:10.13374/j.issn2095-9389.2015.08.008
双相不锈钢热老化前后拉伸变形行为的电子背散射衍射表征
Tensile deformation behavior of duplex stainless steel before and after thermal aging by EBSD
摘要
Abstract
The effects of deformation degree and thermal aging on the tensile properties, phase boundaries, local strain distribu-tion, coincidence site lattice ( CSL) boundaries and orientation distribution of duplex stainless steels were investigated by electron backscattered diffraction ( EBSD) . It is found that after thermal aging, the strength of duplex stainless steels enhances and the ductili-ty decreases. The number and density of small-angle boundaries in ferrite grains increase slightly under large deformation conditions. The plastic deformation ability and local strain in ferrite phases of the thermal aged materials decline. Large deformation destroys the original distribution of austenite and ferrite grains, as well as ∑3 twinning boundaries.关键词
不锈钢/热老化/拉伸/塑性变形Key words
stainless steel/thermal aging/tensile/plastic deformation分类
矿业与冶金引用本文复制引用
刘刚,李时磊,王艳丽,王西涛..双相不锈钢热老化前后拉伸变形行为的电子背散射衍射表征[J].工程科学学报,2015,(8):1023-1028,6.基金项目
国家重点基础研究发展计划资助项目(2012AA050901) （2012AA050901）
