| 应力比和频率对腐蚀疲劳裂纹扩展的影响 |
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| 引用本文： | 李新春,刘强,白燕麟,吕宝桐,郑修麟.应力比和频率对腐蚀疲劳裂纹扩展的影响[J].中南大学学报(自然科学版),1997(2). |
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| 作者姓名： | 李新春 刘强 白燕麟 吕宝桐 郑修麟 |
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| 作者单位： | 中南工业大学粉末冶金国家重点实验室 |
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| 基金项目： | 航空工业部系统工程基金 |
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| 摘 要： | 采用微机辅助直流电位法，研究了应力比和频率对ＬＹ１２ＣＺ铝合金在３．５％ＮａＣｌ水溶液中腐蚀疲劳裂纹扩展的影响．结果表明，应力比升高，裂纹扩展速率升高，但频率变化对裂纹扩展速率无显著影响．文中给出了裂纹扩展速率定量表达式
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| 关 键 词： | 腐蚀疲劳 裂纹扩展 寿命估算 |
THE EFFECTS OF STRESS RATIO AND FREQUENCY ON CORROSION FATIGUE CRACK PROPAGATION FOR ALUMINUM ALLOY |
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| Li Xinchun,Liu Qiang,Bai Yanling,Liu Baotong,Zhen Xiuling.THE EFFECTS OF STRESS RATIO AND FREQUENCY ON CORROSION FATIGUE CRACK PROPAGATION FOR ALUMINUM ALLOY[J].Journal of Central South University:Science and Technology,1997(2). |
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| Authors: | Li Xinchun Liu Qiang Bai Yanling Liu Baotong Zhen Xiuling |
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| Abstract: | This paper studies the effects of stress ratio and frequency on corrosion fatigue crack propagation for LY12CZ aluminum alloy in 3.5%NaCl solution by computer aided direct current potential method.The results show that the crack propagation rate rises when the stress ratio rises,but the change of frequercy has little effect on the crack propagation rate.This paper also gives the quantitative formula for the crack propagation rate. |
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| Keywords: | corrosion fatigue crack propagation life estimate |
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