期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.08.053
关键词
Austenitic stainless steels; Nitrogen; Mechanical properties; Corrosion resistance; Martensitic transformation
In the present work, influence of nitrogen alloying on mechanical and corrosion properties of metastable Fe-18Cr-12Mn-XN alloys was investigated. It was observed that stacking faults and epsilon-martensite needles decreases with N, conversely, short range ordering and deformation twinning increases. Further, it was found that yield strength and hardness of the alloys linearly increases with N. In contrast, elongation and tensile strength of the alloys changed nonlinearly with increasing N. Influence of N on mechanical properties was mainly related to its effect on solid solution strength and deformation-induced alpha-martensitic transformation. SEM fractography of the samples showed a ductile fracture for N-bearing samples. It was observed that N-alloying enhances the corrosion resistance of the alloys. In addition, it was revealed that corrosion resistance of the studied alloys is well comparable with Ni-containing austenitic stainless steels and superior to other ultrahigh strength steels. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据