| DYNAMIC RECRYSTALLIZATION AND SUPERPLASTICITY IN Al-Li ALLOY |
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| 作者姓名： | Liu Ziyi Cui Jianzhong Bai Guangrun Northeast University of Technology Shengyang China |
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| 作者单位： | Liu，Ziyi Cui，Jianzhong Bai，Guangrun Northeast University of Technology，Shengyang 110006，China |
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| 摘 要： | The behavior of dynamic recrystallization in the superplastic deformation of 8090 and 2091 aluminum-lithium alloys have been investigated.TEM observations indicated that dynamic recrystallization occurs at thetriple junction of grain boundaries.The measurement of grain boundary angle showed that recrystallization indynamic equilibrium exists in the process of superplastic deformation of 8090 Al-Li alloy.It is also indicatedthat,besides the role of refining grains and the grain boundary sliding,dynamic recrystallization playsconcurrently a role of stablizing microstructure.Thus dynamic rccrystallization can be used to induce metalssuperplasticity,which leads to a simplification of pretreatment for superplastic deformation.
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DYNAMIC RECRYSTALLIZATION AND SUPERPLASTICITY IN Al-Li ALLOY |
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| Liu,Ziyi Cui,Jianzhong Bai,Guangrun Northeast University of Technology,Shengyang ,China.DYNAMIC RECRYSTALLIZATION AND SUPERPLASTICITY IN Al-Li ALLOY[J].Transactions of Nonferrous Metals Society of China,1993(2). |
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| Authors: | Liu Ziyi Cui Jianzhong Bai Guangrun Northeast University of Technology Shengyang China |
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| Affiliation: | Liu,Ziyi Cui,Jianzhong Bai,Guangrun Northeast University of Technology,Shengyang 110006,China |
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| Abstract: | The behavior of dynamic recrystallization in the superplastic deformation of 8090 and 2091 aluminum- lithium alloys have been investigated.TEM observations indicated that dynamic recrystallization occurs at the triple junction of grain boundaries.The measurement of grain boundary angle showed that recrystallization in dynamic equilibrium exists in the process of superplastic deformation of 8090 Al-Li alloy.It is also indicated that,besides the role of refining grains and the grain boundary sliding,dynamic recrystallization plays concurrently a role of stablizing microstructure.Thus dynamic rccrystallization can be used to induce metals superplasticity,which leads to a simplification of pretreatment for superplastic deformation. |
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| Keywords: | dynamic recrystallization superplasticity Al-Li alloy mechanism |
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