| Manufacturing of aluminum alloy ultra-thick plates by multidirectional forging and subsequent rolling |
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| 作者姓名： | 张辉 林高用 彭大暑 杨立斌 林启权 |
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| 作者单位： | 1. Department of Materials Science and Engineering，Central South University，Changsha 410083，China;2. College of Mechanical Engineering，Xiangtan University，Xiangtan 411105，China |
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| 基金项目： | Project (G19990 64 90 8)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgram |
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| 摘 要： | 1 ＩＮＴＲＯＤＣＴＩＯＮＡｌｕｍｉｎｕｍａｌｌｏｙｕｌｔｒａ ｔｈｉｃｋ ｐｌａｔｅｓｏｆｔｈｉｃｋｎｅｓｓｍｏｒｅｔｈａｎ 4 0ｍｍａｎｄｗｉｔｈｈｉｇｈｍｅｃｈａｎｉｃａｌｐｒｏｐｅｒ ｔｉｅｓａｒｅｔｈｅｍａｉｎｓｔｒｕｃｔｕｒａｌｍａｔｅｒｉａｌｓ,ｗ
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| 关 键 词： | 7075铝合金 极厚板 组合变形模型 多方向锻造 |
Manufacturing of aluminum alloy ultra-thick plates by multidirectional forging and subsequent rolling |
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| ZHANG Hui,LIN Gao yong,PENG Da shu,YANG Li bin,LIN Qi quan.Manufacturing of aluminum alloy ultra-thick plates by multidirectional forging and subsequent rolling[J].Transactions of Nonferrous Metals Society of China,2002,12(2):218-221. |
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| Authors: | ZHANG Hui LIN Gao yong PENG Da shu YANG Li bin LIN Qi quan |
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| Abstract: | A combinatory large deformation model of multidirectional forging and subsequent rolling was proposed for producing high performance aluminum alloy ultra-thick plates.The results show that fine-grain (2～3 μm) structures were obtained when total deformation coefficient λ =32 at 250～350 ℃ under a strain rate of about 0.1 s-1.The development of fine-grained structure can be characterized by the formation of strain-induced high energy dislocation and then transforms into new grain under large deformation at moderate temperature.The very fine secondary particles formed during large deformation play important role in retain the stability of the fine-grained structures. |
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| Keywords: | aluminum alloy combination deformation model forging rolling |
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