PD3钢轨钢接触疲劳变形组织的TEM观察

钢铁, 1999, 34(11): 51-54.

PD3钢轨钢接触疲劳变形组织的TEM观察

盛光敏 ^1, , 范镜泓 ^2, , 彭向和 ^3, , 籍可槟 ^4, , 苏世怀 ^5, , 柯晓涛 ^6,

1.重庆大学

2.重庆大学

3.重庆大学

4.攀枝花钢铁(集团)公司

5.攀枝花钢铁(集团)公司

6.攀枝花钢铁(集团)公司

关键词：接触疲劳 , 塑性变形 , 钢轨钢 , 珠光体

TEM OBSERVATION OF CONTACT FATIGUED MICROSTRUCTURE FOR PD3 RAIL STEEL

在透射电镜下观察接触疲劳失效后不同状态的PD3钢轨钢的变形组织.结果表明,接触疲劳变形组织的主要特点是:珠光体片层间距减小;珠光体团被剪切分割成亚团、先析铁素体内形成位错胞结构;铁素体/渗碳体界面上存在高的位错密度;珠光体中渗碳体片发生变形与断裂.同时对珠光体片层间距与变形组织的关系进行了分析讨论.

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