A continuum damage mechanics based approach to damage evolution of M50 bearing steel considering residual stress induced by shot peening. (October 2018)

• Record Type: Journal Article
• Authors: Guan, Jian; Wang, Liqin; Mao, Yuze; Shi, Xiujiang; Ma, Xinxin; Hu, Bei
• Is Part Of: Tribology international. Volume 126(2018)
• Page Start: 218
• Page End: 228
• Publication Date: 2018-10
• Subjects: Continuum damage mechanics -- Damage evolution -- Carbides -- Residual stress; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2018.05.023
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: The damage evolution induced by three types of carbides in M50 bearing steel is studied in this paper. Stress distribution in the micro-domain is initially obtained to calculate the damage accumulation of the elements. Subsequently, the process of the butterfly generation is simulated. It can be seen that the butterfly wings are generated at the sites where maximum stress appears. The irregular shape carbide seems to be most harmful to the bearing material. Finally, the effect of residual stress on damage evolution induced by the carbides is investigated. The result shows that higher temperature, smaller balls and ion implantation are beneficial for the strengthening of residual stress and hence damage accumulation rate is reduced. Highlights: Continuum damage mechanics is incorporated into Voronoi finite element model to conduct the analysis. The damage evolution in M50 bearing steel induced by three types of carbides is investigated. The effect of residual stress on damage evolution is analyzed.