Two-body abrasion wear mechanism of super bainitic steel

被引：24
作者：
Guo, H. [1 ]
Zhao, A. [1 ,2 ]
Zhi, C. [2 ]
Ding, R. [2 ]
Wang, J. [2 ]
机构：
[1] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 10083, Peoples R China
[2] Univ Sci & Technol Beijing, Engn Res Inst, Beijing 10083, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2017年 / 33卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Super bainitic steel; Wear resistance; Micro-ploughing; Phase transformation strengthening; BEHAVIOR; MICROSTRUCTURE; RESISTANCE;
D O I：
10.1080/02670836.2016.1245239
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The abrasion wear resistance and wear mechanism of super bainitic steel austempered at different temperatures and time have been investigated by two-body abrasion testings, scanning electron microscopy, X-ray diffraction, transformation electron microscopy and electron backscattering diffraction. The results show that the two-body abrasion wear mechanism is predominantly micro-ploughing abrasion, and the wear resistance is decreased with increasing isothermal temperature which is attributed to the decreased hardness caused by a higher retained austenite content and the coarsening of the microstructure. The sample austempered at 230 degrees C for 2h with the higher amount of retained austenite and lower carbon concentration exhibits excellent wear resistance, and the transformation induced plasticity effect is observed during wear process which is beneficial for the improving of hardness and wear resistance.
引用
收藏
页码：893 / 898
页数：6
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