| Determination of strain criterion of Portevin-Le Chatelier effect for aluminum alloy sheets |
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| 作者姓名： | 万敏 韩金全 金海霞 伍惠 董锦亮 李兵 顾伟 |
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| 作者单位： | [1]School of Mechanical Engineering and Automation, Beihang University, Beijing 100083, China [2]Chengdu Aircraft Industrial Co Ltd, Chengdu 610092, China |
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| 基金项目： | Foundation item： Project（K0604020509） supported by Chengdu Aircraft Industrial Co. Ltd and National Foundation of Research of China Acknowledgements The author would like to take this opportunity to express their apprecalion. |
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| 摘 要： | According to the deformation state in skin stretch forming, an experiment was investigated to determine the critical strain, which make the slip line occur, and the strain criteria under different strain paths are obtained. The uniaxial tension tests of different specimens were carried out to determine the critical strains of different strain paths. Then, the slip line limited curve（SLC） is available from these critical strains. Two kinds of aluminum alloys, 2024-T3 and 2524-T3, were studied, and two SLCs are gained. The application of the SLC to an airplane skin stretch forming simulation was investigated, and the results show that the SLC can be used to control the slip lines occurring in practice.
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| 关 键 词： | 铝合金 应变分析 金属加工 有色金属 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Determination of strain criterion of Portevin-Le Chatelier effect for aluminum alloy sheets |
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| WAN Min, HAN Jin-quan, JIN Hai-xia, WU nui, DONG Jin-liang, LI Bing, GU Wei.Determination of strain criterion of Portevin-Le Chatelier effect for aluminum alloy sheets[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):1499-1503. |
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| Authors: | WAN Min HAN Jin-quan JIN Hai-xia WU nui DONG Jin-liang LI Bing GU Wei |
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