| SUPERPLASTICITY OF A RAPIDLY SOLIDIFIED AI-Li ALLOY |
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| 作者姓名： | MANG Weishi WANG Guozhi ZHANG Yongchang HU Zhuangqi SHI Changxu Institute of Metal Research Academia Sinica Shenyang China Yongchang Associate Professor Institute of Metal Research Academia Sinica Shenyang China |
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| 作者单位： | MANG Weishi WANG Guozhi ZHANG Yongchang HU Zhuangqi SHI Changxu Institute of Metal Research，Academia Sinica，Shenyang，China Yongchang Associate Professor，Institute of Metal Research，Academia Sinica，Shenyang 110015，China |
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| 摘 要： | A rapidly solidified microcrystalline Al-Li-Cu-Mg-Zr alloy and its superplasicity have beeninvestigated.An optimum tensile elongation of 585% was obtained at 540℃ and strain rate1.67×10~(-2)s~(-1).The superplastic Al-Li alloy is manufaetured using thermomechanical pro-cessing:solution,overaging,warm rolling and recrystallization.Microstructural changes inthermomechanical processing and cavitation occurred during superplastic deformation havebeen observed.The superplastic failure of alloy may be caused mainly by nucleation andgrowth of cavities as well as the linkage around grains.
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| 收稿时间： | 1990-08-25 |
| 修稿时间： | 1990-08-25 |
SUPERPLASTICITY OF A RAPIDLY SOLIDIFIED AI-Li ALLOY |
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| MANG Weishi WANG Guozhi ZHANG Yongchang HU Zhuangqi SHI Changxu Institute of Metal Research,Academia Sinica,Shenyang,China Yongchang Associate Professor,Institute of Metal Research,Academia Sinica,Shenyang ,China.SUPERPLASTICITY OF A RAPIDLY SOLIDIFIED AI-Li ALLOY[J].Acta Metallurgica Sinica(English Letters),1990,3(4):236-242. |
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| Authors: | MANG Weishi WANG Guozhi ZHANG Yongchang HU Zhuangqi SHI Changxu Institute of Metal Research Academia Sinica Shenyang China Yongchang Associate Professor |
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| Affiliation: | MANG Weishi WANG Guozhi ZHANG Yongchang HU Zhuangqi SHI Changxu Institute of Metal Research,Academia Sinica,Shenyang,China Yongchang Associate Professor,Institute of Metal Research,Academia Sinica,Shenyang,China |
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| Abstract: | A rapidly solidified microcrystalline Al-Li-Cu-Mg-Zr alloy and its superplasicity have been investigated.An optimum tensile elongation of 585% was obtained at 540℃ and strain rate 1.67×10~(-2)s~(-1).The superplastic Al-Li alloy is manufaetured using thermomechanical pro- cessing:solution,overaging,warm rolling and recrystallization.Microstructural changes in thermomechanical processing and cavitation occurred during superplastic deformation have been observed.The superplastic failure of alloy may be caused mainly by nucleation and growth of cavities as well as the linkage around grains. |
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| Keywords: | superplasticity Al-Li alloy rapid solidification thermomechanical processing |
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