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Gear failure analysis of 20CrMnTi
Author(s): 
Pages: 86-88
Year: Issue:  9
Journal: Construction Machinery

Keyword:  齿轮微观硬度金相组织失效分析;
Abstract: 借助OPLYMPUS显微镜、HV-1000显微维氏硬度计对某变速箱中3组失效齿轮的轮齿硬度分布、显微组织进行分析,结果表明:失效轮齿渗碳层存在连续和半连续网状碳化物,这些硬而脆的碳化物分布在原奥氏体晶界上,大大降低了晶界的强度和塑韧性,使基体在外力作用时由位错运动导致的组织区域间相互协调变形受阻.
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