| GCr15轴承钢接触疲劳次表面裂纹的跟踪观察SCIEI |
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| 引用本文： | 陈隆庆,陈箐.GCr15轴承钢接触疲劳次表面裂纹的跟踪观察SCIEI[J].金属学报,1991,27(5):61-65. |
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| 作者姓名： | 陈隆庆 陈箐 |
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| 作者单位： | 郑州工学院，洛阳工学院 讲师 |
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| 摘 要： | 本文在对轴承钢接触疲劳剥落过程进行连续追踪观测的基础上,推导了次表面裂纹扩展的估算公式。理论分析和试验结果表明,接触疲劳寿命与次表面裂纹扩展角之间存在着明显的对应关系。并对残余压应力和残余奥氏体可以提高接触疲劳寿命的原因提出了新的解释。
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| 关 键 词： | 轴承钢 表面 裂纹 残余应力 奥氏体 |
| 收稿时间： | 1991-05-18 |
| 修稿时间： | 1991-05-18 |
TRACKING OBSERVATION ON SUBSURFACE CRACKING IN GCr15 BEARING STEEL UNDER ROLLING CONTACT FATIGUE |
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| CHEN Longqing Zhengzhou Institute of Technology,CHEN Qing Luoyang Institute of Technology.TRACKING OBSERVATION ON SUBSURFACE CRACKING IN GCr15 BEARING STEEL UNDER ROLLING CONTACT FATIGUE[J].Acta Metallurgica Sinica,1991,27(5):61-65. |
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| Authors: | CHEN Longqing Zhengzhou Institute of Technology CHEN Qing Luoyang Institute of Technology |
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| Abstract: | Based on the sequent tracking observation on spalling of GCr15 bearing steel under rolling contact fatigue, an expression for estimating the propagation of subsurface cracks was derived. The rolling contact fatigue life was found to be markedly related the subsurface crack propagation angle. A new explanation of reason why the rolling contact fatigue life can be prolonged by residual compressive stress and retained austenite was advanced. |
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| Keywords: | contact fatigue fatigue life crack propagating angle residual stress retained austenite |
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