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| 载荷频率和热处理对压铸镁合金AZ91HP疲劳裂纹扩展速率的影响 | |
| 引用本文： | 刘正,李艳春,王中光,王越,刘重阳. 载荷频率和热处理对压铸镁合金AZ91HP疲劳裂纹扩展速率的影响[J]. 航空材料学报, 2000, 20(1): 7-11 |
| 作者姓名： | 刘正 李艳春 王中光 王越 刘重阳 |
| 作者单位： | 1. 中国科学院金属研究所材料疲劳与断裂国家重点实验室,沈阳,110015;沈阳工业大学材料科学与工程系,沈阳,110023 2. 沈阳工业大学材料科学与工程系,沈阳,110023 3. 中国科学院金属研究所材料疲劳与断裂国家重点实验室,沈阳,110015 |
| 摘 要： | 在保留压铸态截面的条件下,通过对压铸(F)、固溶(T4)和峰时效(T6)三种热处理状态的压铸镁合金AZ91HP薄板试样在不同频率下的疲劳裂纹扩展速率试验结果的分析发现,疲劳裂纹扩展速率随着加载频率的提高而降低.固溶处理能够降低疲劳裂纹扩展速率,但随后的时效处理又加剧了疲劳裂纹扩展速率的提高. |
| 关 键 词： | 疲劳裂纹扩展速率 载荷频率 热处理 |
| 文章编号： | 1005-5053(2000)01-0007-05 |
| 修稿时间： | 1999-08-16 |
Influence of load frequency and heat treatment on fatigue crack propagation rate of diecasting alloy AZ91HP |
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| LIU Zheng,LI Yan-chun,WANG Zhong-guang,WANG Yue,LIU Zhong-yang. Influence of load frequency and heat treatment on fatigue crack propagation rate of diecasting alloy AZ91HP[J]. Journal of Aeronautical Materials, 2000, 20(1): 7-11 | |
| Authors: | LIU Zheng LI Yan-chun WANG Zhong-guang WANG Yue LIU Zhong-yang |
| Abstract: | On the condition of preserving the as die casting section,three different die casting magnesium alloys AZ91HP in the states of as die cast,solution and peak aging were analyzed,which are tested under different frequency.The result has shown that the fatigue crack propagation rate(FCPR) of die casting magnesium alloy increases with the frequency decreasing. FCPR can be reduced by solution treatment but accelerated by aging. |
| Keywords: | fatigue crack propagation rate load frequency heat treatment |
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