| 腐蚀对Al-Zn-Mg合金型材疲劳强度影响规律的研究 |
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| 引用本文： | 陈鉴,王向东,潘柏清,刘雄,丁浩,龙明生,剡苏荣,谢紫华,邵晓峰.腐蚀对Al-Zn-Mg合金型材疲劳强度影响规律的研究[J].铁道车辆,2022(1). |
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| 作者姓名： | 陈鉴 王向东 潘柏清 刘雄 丁浩 龙明生 剡苏荣 谢紫华 邵晓峰 |
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| 作者单位： | 中车株洲电力机车研究所有限公司时代电气制造中心 |
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| 摘 要： | 通过腐蚀疲劳、应力腐蚀相结合的方法模拟“服役—停放”状态,研究了不同加速周期下Al-Zn-Mg合金型材的疲劳强度、腐蚀疲劳强度,并通过灰色理论模型预测了Al-Zn-Mg合金材料疲劳强度的衰减规律。结果表明:Al-Zn-Mg合金型材的常规疲劳强度、腐蚀疲劳强度会随模拟加速试验周期的延长而衰减,腐蚀疲劳条件下Al-Zn-Mg合金型材的性能衰减比常规疲劳条件下的性能衰减更快。
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| 关 键 词： | AL-ZN-MG合金 疲劳 腐蚀疲劳 衰减 灰色理论 |
Study on the Influence of Corrosion on the Fatigue Strength of Al-Zn-Mg Alloy Profiles |
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| CHEN Jian,WANG Xiangdong,PAN Baiqing,LIU Xiong,DING Hao,LONG Mingsheng,YAN Surong,XIE Zihua,SHAO Xiaofeng.Study on the Influence of Corrosion on the Fatigue Strength of Al-Zn-Mg Alloy Profiles[J].Rolling Stock,2022(1). |
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| Authors: | CHEN Jian WANG Xiangdong PAN Baiqing LIU Xiong DING Hao LONG Mingsheng YAN Surong XIE Zihua SHAO Xiaofeng |
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| Affiliation: | (Times electric manufacturing center of CRRC Zhuzhou Electrical Locomotive Research Institute Co.,Ltd.,Zhuzhou 412001,China) |
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| Abstract: | In this paper,the fatigue strength and corrosion fatigue strength of Al-Zn-Mg alloy profiles under different acceleration cycles are studied by simulating the“service-stop”state with the combination of corrosion fatigue and stress corrosion.The attenuation law of fatigue strength of Al-Zn-Mg alloy is predicted by grey theory model.The results show that the conventional fatigue strength and corrosion fatigue strength of Al-Zn-Mg alloy profiles decrease with the extension of the simulated accelerated test cycle.The performance degradation of Al-Zn-Mg alloy profiles under corrosion fatigue conditions is faster than that under conventional fatigue conditions. |
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| Keywords: | Al-Zn-Mg alloy fatigue corrosion fatigue decay grey theory |
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