| Al-Li-Zr和Al-Li-Cu-Mg-Zr合金的显微组织和力学性能 |
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| 引用本文： | 尹志民,K.T.AUST,G.C.WEATHERLY.Al-Li-Zr和Al-Li-Cu-Mg-Zr合金的显微组织和力学性能[J].金属学报,1988,24(5):347-353. |
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| 作者姓名： | 尹志民 K.T.AUST G.C.WEATHERLY |
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| 作者单位： | 湖南长沙中南工业大学材料系，Univertsity of Toronto Canada，Univertsity of Toronto，Canada |
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| 摘 要： | 研究了两种Al-Li基合金的时效硬化、拉伸和冲击等力学行为,用透射电镜和扫描电镜对合金的显微组织结构,变形和断裂的特征进行了分析。结果指出:同一成分、不同热处理态的合金变形和断裂的机制截然不同。分析了时效态合金韧性下降和产生冲击各向异性的原因。讨论了改善Al-Li合金塑、韧性的可能途径。
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| 关 键 词： | Al-Li基合金 显微组织 力学性能 |
| 收稿时间： | 1988-05-18 |
| 修稿时间： | 1988-05-18 |
MICROSTRUCTURE AND MECHANICAL BEHAVIOUR OF Al-Li-Zr AND Al-Li-Cu-Mg-Zr ALLOYS |
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| YIN Zhimin,AUST K. T.,WEATHERLY G. C. Central-South University of Technology,Changsha. Hunan,University of Toronto,Toronto,ONT,Canada.MICROSTRUCTURE AND MECHANICAL BEHAVIOUR OF Al-Li-Zr AND Al-Li-Cu-Mg-Zr ALLOYS[J].Acta Metallurgica Sinica,1988,24(5):347-353. |
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| Authors: | YIN Zhimin AUST K T WEATHERLY G C Central-South University of Technology Changsha Hunan University of Toronto Toronto ONT Canada |
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| Abstract: | The aging response, tensile and impact properties of two kinds of Al-
Li based alloys have been studied. The microstructure, deformation as well as frac-
ture behaviour have been observed by SEM and TEM. It has been found that the
mechanism of deformation and fracture for different heat-treated alloys with the
same chemical composition is quite different. The cause led to the drop of ductili-
ty, toughness as well as anisotropy in peak-aged alloys have been analysed. Finally,
possible methods to improve the ductility and toughness of the alloys have been
discussed. |
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| Keywords: | Al-Li based alloy microstructure mechanical properties |
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