| Temperature and Stress Dependence of Occurrence of Strain Burst in Cyclic Creep of AI-Mg Alloy |
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| 作者姓名： | 朱世杰 阳志安 王中光 |
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| 作者单位： | State Key Laboratory for Fatigue and Fracture of Materials Institute of Metal Research，Shenyang，110015，China To whom correspondence should be addressed，State Key Laboratory for Fatigue and Fracture of Materials，Institute of Metal Research，Shenyang，110015，China，State Key Laboratory for Fatigue and Fracture of Materials，Institute of Metal Research，Shenyang，110015，China |
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| 摘 要： | Cyclic creep tests of Al-Mg alloy have beenconducted at a wide range of stress andtemperature.When Mg content is beyond 0.45%,the strain bursts can be observed in the cyclic creepcurves.There exists a critical stress for the occur-rence of the strain burst,which increases with an in-crease of Mg content and is almost 60% of the ul-timate tensile stress.The occurrence of strain burstis proposed to be controlled by the easiness of thecross-slip of dislocations.For Al-Mg alloy,thedynamic strain aging plays an important role in thestrain bursts.
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| 收稿时间： | 1992-05-28 |
Temperature and Stress Dependence of Occurrence of Strain Burst in Cyclic Creep of AI-Mg Alloy |
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| ZHU Shijie YANG Zhian WANG Zhongguang State Key Laboratory for Fatigue and Fracture of Materials.Temperature and Stress Dependence of Occurrence of Strain Burst in Cyclic Creep of AI-Mg Alloy[J].Journal of Materials Science & Technology,1992,8(3):177-180. |
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| Authors: | ZHU Shijie YANG Zhian WANG Zhongguang State Key Laboratory for Fatigue and Fracture of Materials |
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| Affiliation: | ZHU Shijie YANG Zhian WANG Zhongguang State Key Laboratory for Fatigue and Fracture of Materials,Institute of Metal Research,Shenyang,,ChinaTo whom correspondence should be addressed |
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| Abstract: | Cyclic creep tests of Al-Mg alloy have been conducted at a wide range of stress and temperature.When Mg content is beyond 0.45%, the strain bursts can be observed in the cyclic creep curves.There exists a critical stress for the occur- rence of the strain burst,which increases with an in- crease of Mg content and is almost 60% of the ul- timate tensile stress.The occurrence of strain burst is proposed to be controlled by the easiness of the cross-slip of dislocations.For Al-Mg alloy,the dynamic strain aging plays an important role in the strain bursts. |
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| Keywords: | cyclic creep Al-Mg alloy strain burst cross-slip |
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