Microstructure and mechanical properties of a 15%Cr supermartensitic stainless steel microalloyed with tungsten

被引：1

作者：

Ye, Dong ^{[1
]}

Li, Jun ^{[1
]}

Jiang, Wen ^{[1
]}

Su, Jie ^{[2
]}

Zhao, Kun-Yu ^{[1
]}

机构：

[1] Faculty of Materials Science and Engineering, Kunming University of Science and Technology

[2] Institute for Structural Materials, Central Iron and Steel Research Institute

来源：

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering | 2012年 / 29卷 / 03期

关键词：

Mechanical property; Metal materials; Microstructure; Reversed austenite; Super martensitic stainless steel; Tungsten;

D O I：

10.3724/SP.J.1249.2012.03258

中图分类号：

学科分类号：

摘要：

The microstructure and mechanical properties of a 15%Cr super martensitic stainless steel microalloyed with tungsten were investigated by means of dilatometer, optical microscopy, transmission electron microscopy(TEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive spectrometer(EDS), and tensile and hardness tests. The results revealed that a typical biphase structure of tempered martensite and reversed austenite which diffusional distributed in martensite matrix was selected after quenching and tempering. The reversed austenite and martensite matrix meet the K-S relationship. The diffraction pattern calculations and the EDS analysis of TEM confirmed that the nanometer-sized Laves particles and rich copper phase ε-Cu precipitated in the matrix during tempering in the investigated steel, which were contributive to improve strength. The steel microalloyed with W showed an improved mechanical property values: 26~36 RC hardness, 895~1009 MPa tensile strength, 17%~21% elongation.

引用

页码：258 / 263

页数：5

共 19 条

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