The effect of rolling contact fatigue properties on 316 stainless steel
under laser shock peening
Abstract
In this paper, 316 stainless steel was treated by laser shock peening
(LSP) technology, and the micro-hardness, residual stress and rolling
contact fatigue (RCF) performance were investigated. The result suggests
that LSP can effectively improve the RCF performance of 316 stainless
steel. The main factor is that LSP can induce high amplitude compressive
residual stress on the surface layer. With the increase of residual
compressive stress, the worn mechanism of RCF surface changes from
delamination to micro-plastic deformation. It is also found that the RCF
of 316 stainless steel treated by LSP was sensitive to the contact
stress.