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Hydrogen Accelerated Classical Rolling Contact Fatigue and Evaluation of the Residual Stress Response

机译:氢加速经典滚动接触疲劳及残余应力响应评估

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摘要

The accelerating effect of absorbed hydrogen on subsurface rolling contact fatigue is studied by bearing rig testing under HF electric current passage. The additional chemical loading enhances dislocation mobility and microplasticity. Structural changes occur in a premature stage, as shown by comparative XRD residual stress analysis. Dark etching regions appear to be a precursor for phase transformation in regular white etching bands. Fatigue crack initiation is demonstrated.
机译:通过在高频电流通过下的轴承台架试验研究了吸收的氢对地下滚动接触疲劳的促进作用。额外的化学负载可提高位错迁移率和微塑性。结构变化发生在过早的阶段,如比较XRD残余应力分析所示。深色蚀刻区域似乎是规则的白色蚀刻带中发生相变的前兆。证明了疲劳裂纹萌生。

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