Microstructure and properties of super martensitic stainless steel microalloyed with tungsten and copper

被引：8
|
作者：
Ye, D. [1 ]
Li, J. [1 ]
Yong, Q. -L. [2 ]
Su, J. [2 ]
Tao, J. -M. [1 ]
Zhao, K. -Y. [1 ]
机构：
[1] Kunming Univ Sci & Technol, Dept Mat Sci & Engn, Kunming 650093, Peoples R China
[2] Cent Iron & Steel Res Inst, Inst Struct Mat, Beijing 100081, Peoples R China
来源：
MATERIALS TECHNOLOGY | 2012年 / 27卷 / 01期
关键词：
Super martensitic stainless steel; Tungsten; Copper; Reversed austenite; AUSTENITE;
D O I：
10.1179/175355511X13240279340886
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and properties of super martensitic stainless steel (SMSS) microalloyed with tungsten and copper were studied by means of optical microscopy, dilatometer, X-ray diffraction and tensile tests. The results showed that the microstructure of SMSS, after quenching and tempering, was a typical biphase structure with tempered martensite and reversed austenite dispersedly distributed in the martensite matrix. W and Cu were added into the SMSS to reduce the transformation temperature (M-s) and improve the strength and hardness of the matrix by grain refining and solid solution strengthening. Thermo-Calc calculations confirmed that M23C6 compound and Laves phase were precipitated during tempering in the investigated steel. Compared with traditional SMSS, the steel microalloyed with W and Cu exhibited better mechanical properties.
引用
收藏
页码：88 / 91
页数：4
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