Effect of nanoscale V2C precipitates on the three-body abrasive wear behavior of high-Mn austenitic steel

• Published in: Wear Vol. 436-437; p. 203009
• Main Authors: Zhou, Zaifeng, Shan, Quan, Jiang, Yehua, Li, Zulai, Zhang, ZheXuan
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.10.2019; Elsevier Science Ltd
• Subjects: Abrasive wear; Alloying; Austenitic stainless steels; Frictional wear; Grooves; Hardening rate; High-Mn austenitic steel; Nanohardness; Nanoscale V2C precipitates reinforced; Precipitates; Sliding friction; Strain hardening; Tempering; Tempering treatment; Three-body abrasive wear; Wear mechanism; Wear mechanisms; Wear resistance; Yield strength; Yield stress; High-Mn austenitic steel; Three-body abrasive wear; Wear mechanism; Tempering treatment; Nanoscale V2C precipitates reinforced
• ISSN: 0043-1648; 1873-2577
• DOI: 10.1016/j.wear.2019.203009

High-Mn austenitic steel reinforced with carbide particles can significantly enhance the wear resistance of steel. However, micron-sized particles may be detached from the surface of the matrix during repeated sliding wear, resulting in severe deterioration of the wear resistance of steel. In this study, different amounts of nanoscale V2C particles were precipitated from alloyed high-Mn austenitic steel by tempering at 400, 450 and 500 °C. With the increased tempering temperature, the strain hardening rate, nanohardness, modulus, and yield strength of the experimental steel all were significantly enhanced. A higher hardness and modulus enhanced the wear resistance of steel during the initial stage of three-body abrasive sliding wear. The higher strain hardening rate and yield strength improved the wear resistance of steel by enhancing the supporting effect of the austenitic matrix on the micron-sized particles. The wear mechanism of the tested steel was transformed from deep grooves to microploughing, pits, and fatigues with increased tempering temperature. •Hardness and modulus determine the mass loss of the steel at the beginning of wear.•Higher yield strength of the matrix enhance the supporting effect on the micron particles.•Strain hardening rate increases with the tempering temperature.•Plenty of nanoscale V2C could improve the wear resistance of austenitic matrix.