| LZ50车轴钢在复合微动条件下的研究 |
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| 引用本文： | 张蕊,何国求. LZ50车轴钢在复合微动条件下的研究[J]. 金属功能材料, 2011, 18(1): 22-25 |
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| 作者姓名： | 张蕊 何国求 |
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| 作者单位： | 同济大学材料科学与工程学院,上海市金属功能材料开发应用重点实验室,上海,200092 |
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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： | 微动疲劳损伤广泛存在于各种机械接触变载荷作用的构件上,如螺栓,轴承,键槽和榫槽等.微动疲劳会加速受微动作用构件的接触处表面及表层裂纹的萌生和扩展,在微动疲劳的早期阶段裂纹生长速率较高,导致了在微动条件下金属构件过早失效,大幅度降低构件寿命.本文以LZ50车轴钢为主要研究对象,实现了在圆形和椭网形路径加载下的拉扭复合微动...
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| 关 键 词： | LZ50钢 微动疲劳 疲劳寿命 应力幅值 |
Study on LZ50 Axle Steel under Condition of Composite Fretting |
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| ZHANG Rui,HE Guo-qiu. Study on LZ50 Axle Steel under Condition of Composite Fretting[J]. Metallic Functional Materials, 2011, 18(1): 22-25 |
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| Authors: | ZHANG Rui HE Guo-qiu |
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| Affiliation: | ZHANG Rui,HE Guo-qiu(School of Materials Science and Engineering,Tongji University,Shanghai Key Laboratory for R & D and Application of Metallic Functional Materialsm,Shanghai 200092,China) |
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| Abstract: | Fretting fatigue damage widely lies in machine components which interfaces bear alternating load,such as bolts,axletrees,slots and tenors.Fretting fatigue will accelerate the crack initiation and growth on the surface and the sub-surface of the fretting contact components.In the early stages,fretting fatigue crack grows fast,which leads to early failure of metal components and cause a significant reduction on the working life.In this study,the fretting fatigue test of LZ50 steel is executed in the round and... |
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| Keywords: | LZ50 steel fretting fatigue fatigue life stress amplitude |
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