| 多轴微动疲劳损伤行为 |
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| 引用本文： | 刘兵,何国球,蒋小松,朱旻昊.多轴微动疲劳损伤行为[J].同济大学学报(自然科学版),2012,40(1):0077-0080. |
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| 作者姓名： | 刘兵 何国球 蒋小松 朱旻昊 |
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| 作者单位： | 1. 同济大学材料科学与工程学院,上海201804;上海市金属功能材料开发应用重点实验室,上海201804
2. 西南交通大学牵引动力国家重点实验室,四川成都,610031 |
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| 基金项目： | 国家973计划资助项目（2007CB714704）；国家自然科学基金资助项目（50771073）；教育部“新世纪优秀人才支持计划”项目（NCET-05-0388） |
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| 摘 要： | 通过柱面对柱面的接触方式,对35CrMoA钢在拉扭复合载荷作用下的低周微动疲劳特性进行研究,并采用光学显微镜和扫描电子显微镜对微动疲劳试样的微动斑和断口形貌进行观察,讨论分析了微动摩擦磨损对材料微动疲劳失效行为的影响。结果认为,微动区产生的氧化物磨屑加剧了表层材料的磨损,微动摩擦还促使疲劳裂纹源加速萌生,最终使材料在微动摩擦磨损区边缘断裂失效。
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| 关 键 词： | 微动疲劳 失效分析 断口形貌 |
| 收稿时间： | 2010/11/5 0:00:00 |
| 修稿时间： | 2011/11/27 0:00:00 |
Multi axial Fretting Fatigue Behavior |
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| LIU Bing,HE Guoqiu,JIANG Xiaosong and ZHU Minhao.Multi axial Fretting Fatigue Behavior[J].Journal of Tongji University(Natural Science),2012,40(1):0077-0080. |
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| Authors: | LIU Bing HE Guoqiu JIANG Xiaosong and ZHU Minhao |
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| Institution: | material science and engineering school of tongji university |
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| Abstract: | In the present paper, the model of cylinder shape surface contact was applied to conduct the investigation of fretting fatigue failure characters of 35CrMoA under multi-axial cyclic loading. And the fretting wear scar and fracture morphology were examined by optical microscope and scanning electronic microscope. The effect of fretting wear on material fatigue failure was discussed, too. Results of this study indicate that the oxide debris produced in the wear scar play important roles to surface material damage; fretting wear can accelerate the initiation of fretting fatigue crack and lead to material failure at the boundary of fretting and non-fretting area. |
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| Keywords: | Fretting Fatigue Failure Analysis Fractography |
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