Effects of cold deformation on microstructure and mechanical behavior of a high nitrogen austenitic stainless steel

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	Effects of cold deformation on microstructure and mechanical behavior of a high nitrogen austenitic stainless steel
	Wang Songtao ; Yang Ke ; Shan Yiyin ; Li Laifeng
通讯作者	Wang Songtao(stwang@imr.ac.cn)
	2007-07-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	43 期号:7 页码:713-718
摘要	The influences of cold deformation on the microstructure and mechanical behavior for a high nitrogen austenitic stainless steel (1.2%N) were investigated through cold-rolling to different thickness reductions. No deformation-induced alpha' martensite was found in the steel even deformed up to 56%. It was found that the mechanical twins and dislocations slipping were the main deformation mechanism at the initial deformation stage, and the slipping was strongly obstructed by the twins. With increase of the deformation, the twins were split by slipping lines, and the twin boundaries were blurred. The strain-hardening exponent decreased with increase of the deformation. When the deformation reached to 56%, the yield strength and ultimate tensile strength were increased by about two times and one time, reached to 1654 MPa and 1870 MPa, respectively. By comparing the roles of nitrogen in several austenitic stainless steels, it was suggested that nitrogen obstructs the dislocations slipping and enhances the strain-hardening ability through the short range ordering.
关键词	high nitrogen steel cold deformation microstructure mechanical property stacking fault energy
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000248548200009
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/90072
专题	中国科学院金属研究所
通讯作者	Wang Songtao
作者单位	1.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang Songtao,Yang Ke,Shan Yiyin,et al. Effects of cold deformation on microstructure and mechanical behavior of a high nitrogen austenitic stainless steel[J]. ACTA METALLURGICA SINICA,2007,43(7):713-718.
APA	Wang Songtao,Yang Ke,Shan Yiyin,&Li Laifeng.(2007).Effects of cold deformation on microstructure and mechanical behavior of a high nitrogen austenitic stainless steel.ACTA METALLURGICA SINICA,43(7),713-718.
MLA	Wang Songtao,et al."Effects of cold deformation on microstructure and mechanical behavior of a high nitrogen austenitic stainless steel".ACTA METALLURGICA SINICA 43.7(2007):713-718.