在本研究中，系统地分析了 AISI 9310 齿轮钢的滚动滑动接触疲劳 (RSCF) 失效，包括疲劳寿命特征、微观结构和晶体取向的演变以及显微硬度和残余应力分布的变化。RSCF 实验是使用双辊疲劳试验台进行的。AISI 9310 钢辊的 RSCF 寿命随着最大赫兹接触压力的增加而持续下降，然而，由于辊表面附近显微硬度和压缩残余应力的增强，可以通过额外的喷丸处理有效地提高它。滚子表面附近的主要疲劳损伤特征为倾斜裂纹、微点蚀、剥落和塑性变形。尽管 RSCF 降低了压缩残余应力，但显微硬度明显增加，这应归因于细化的微观结构、增加的位错密度以及从残余奥氏体到马氏体的相变。此外，在 RSCF 过程中累积的塑性应变导致了几个优选的晶体取向的发展，这些取向对应于很少报道的体心立方 (BCC) 材料的理想剪切纹理组件。

"点击查看英文标题和摘要"

In the present study, rolling-sliding contact fatigue (RSCF) failures of AISI 9310 gear steel were analyzed systematically, in terms of characterizing the fatigue life, evolution of microstructure and crystallographic orientation, and variation of microhardness and residual stress distributions. The RSCF experiments were conducted using a twin rollers fatigue test rig. The RSCF life of AISI 9310 steel roller decreased continuously with increasing the maximum Hertzian contact pressure, however, it could be effectively improved by additional shot peening process owing to the enhanced microhardness and compressive residual stress near the roller surface. The main fatigue damage characteristics near the roller surface were consisted of inclined cracks, micropitting, spallation and plastic deformation. Although the compressive residual stress was reduced by RSCF, there was an obvious increase in the microhardness which should be attributed to the refined microstructure, increased dislocation density as well as phase transformation from retained austenite to martensite. In addition, the accumulated plastic strain during RSCF resulted into development of several preferred crystallographic orientations corresponding to ideal shear texture components of body-centered cubic (BCC) materials that has been seldom reported.