Fu-Yuan Dong
,
Peng Zhang
,
Jian-Chao Pang
,
Qi-Qiang Duan
,
Yi-Bin Ren
,
Ke Yang
,
Zhe-Feng Zhang
金属学报(英文版)
doi:10.1007/s40195-016-0370-9
Three high-nitrogen stainless steels with different N contents were successfully processed by equal-channel angular pressing for one pass, and their microstructures and mechanical properties were investigated. It was found that the microstructure of the billet was heterogeneous across the billet thickness, resulting in the difference in the mechanical properties due to the different deformation conditions. A relatively low strength, high uniform elongation, and high work-hardening rate for the samples at the bottom of the billet was achieved in comparison with those processed at the top. Meanwhile, it was observed that the density of deformation twins increased with the content of N; accordingly, the strength and elongation of the alloys increase with the content of N, resulting in a good strength-ductility combination.
关键词:
High-nitrogen
,
stainless
,
(HNS)
,
steels
,
Equal-channel
,
angular
,
pressing
,
((ECAP))
,
N
,
content
,
Twinning
,
Strength
,
Ductility
罗许
,
史庆南
,
刘韶华
,
陈玉良
,
黎志勇
上海金属
doi:10.3969/j.issn.1001-7208.2009.03.013
材料等径角挤压法(ECAP)有着相对简单的制备工艺及较好的细化效果.综述了块体纳米材料等径角挤压制备技术的工作原理,并分别介绍了新发展的连续等径角挤压方法,如旋转模具ECAP技术、多级连续ECAP法、板材连续剪切变形法、ECAP-Conform新技术等,并对连续等径角挤压法的应用前景进行了展望.
关键词:
等径角挤压
,
((ECAP))
,
超细晶材料
,
旋转模具
,
(ECAP)-Conform
,
新技术
