Effect of retained austenite on adhesion-dominated wear of nanostructured carbide-free bainitic steel

被引：32
|
作者：
Moghaddam, P. Valizadeh [1 ]
Hardell, J. [1 ]
Vuorinen, E. [2 ]
Prakash, B. [1 ,3 ]
机构：
[1] Lulea Univ Technol, Machine Elements Div, Lulea, Sweden
[2] Lulea Univ Technol, Mat Sci Div, Lulea, Sweden
[3] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2020年 / 150卷
关键词：
Bainite; Carbide-free; Retained austenite; Wear; ROLLING/SLIDING WEAR; BEARING STEEL; BEHAVIOR; RESISTANCE; THICKNESS;
D O I：
10.1016/j.triboint.2020.106348
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Sliding wear performance of carbide-free bainitic steel is significantly affected by microstructure. This investigation is an attempt to find a correlation between microstructure and wear resistance of carbide-free bainitic steel and compare the results with that of a conventional tempered martensitic microstructure. Under predominantly adhesive wear conditions, carbide-free bainitic microstructure with the highest amount of retained austenite offers the best wear resistance. This is mainly attributed to the more pronounced work hardening and TRIP-effect of carbide-free bainitic microstructure austempered at higher temperature. Therefore, higher initial bulk hardness is not the only indicator of wear resistance. Moreover, when both oxidation and adhesion are active, a microstructure with an optimum content of retained austenite and bainitic ferrite shows the highest wear resistance.
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页数：14
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