针对深氮化硬化32Cr3MoVE钢进行了硬化层组织性能的表征分析.与18CrNi4A钢渗碳件、32Cr3MoVE钢常规氮化件进行了接触疲劳性能对比试验研究,并对深氮化件进行了接触疲劳失效行为分析,认为两种裂纹萌生模式同时存在,但其疲劳破坏取决于表层内裂纹的萌生和扩展.同时探索了深氮化硬化钢长寿命机理:渗氮层深达0.6～0.8mm,渗层组织优异,表面硬度高,具有优异的硬度梯度和残余应力分布.
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