σ-phase morphologies and their effect on mechanical properties of duplex stainless steels

被引：0
|
作者：
Pohl, Michael [1 ]
Storz, Oliver [1 ]
Glogowski, Thomas [1 ]
机构：
[1] Ruhr Univ Bochum, Inst Werkstoffe Werkstoffprufung, D-44801 Bochum, Germany
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2008年 / 99卷 / 10期
关键词：
Duplex stainless steel; sigma-phase; chi-phase; Mechanical properties;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The aim of the presented study is to investigate the influence of the different sigma-phase morphologies on the mechanical, wear and corrosive behaviour of the duplex Stainless steel 1.4462 (X2CrNiMoN 22 5 3). Different amounts of sigma-phase were precipitated in tensile. impact strength, wear and corrosion samples by annealing at 750 degrees C. 850 degrees C and 938 degrees C. sigma-phase shows a detrimental influence oil the impact strength and the corrosion behaviour. To a very limited extent it can be Used to slightly raise the strength Under quasi-static load and to improve the wear resistance. Finally, it can be concluded that sigma-phase has more unfavourable influences oil the material's behaviour than advantageous ones. Therefore, it should he avoided in duplex stainless steels.
引用
收藏
页码：1163 / 1170
页数：8
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