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用球 -平面接触微动设备研究了 316L不锈钢微动损伤速率随微动时间的变化 ,解析了316L不锈钢不同微动阶段的损伤机制 .316L不锈钢微动分三个阶段 :第一阶段为微突体接触机制 ,犁沟损伤严重 ;第二阶段缝隙腐蚀的发生发展成为影响微动的主导因素 ;第三阶段是腐蚀疲劳微断裂所致剥层机制为主的损伤过程 .力学化学交互作用分量在稳定阶段占损伤的 6 0 %以上 ,对316L不锈钢微动损伤影响显著 ;力学分量随微动过程的进行线性下降 ,腐蚀分量线性增长 ,但力学因素是材料微动损伤的主要因素
The fretting damage rate of 316L stainless steel with fretting time was investigated by ball-plane contact fretting equipment, and the damage mechanism of 316L stainless steels at different fretting stages was analyzed. The 316L stainless steel fretting was divided into three stages: the first stage was microprojection Body contact mechanism, serious furrow damage; the occurrence and development of crevice corrosion in the second stage became the dominant factor affecting the fretting; the third stage was the damage process dominated by the delamination mechanism caused by micro-fatigue corrosion fatigue.Components of mechanical and chemical interaction The stability stage accounts for more than 60% of the damage, which has a significant effect on the fretting damage of 316L stainless steel. The mechanical component decreases linearly with the fretting process, and the corrosion component increases linearly. However, the mechanical factor is the main factor of material fretting damage