| Unique microstructure and property of a 2024 aluminum alloy subjected to upsetting extrusion multiple processing |
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| 作者姓名： | LIXiaoqiang LIYuanyuan CHENWeiping LONGYan HULianxi WANGErde |
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| 作者单位： | [1]CollegeofMechanicalEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,China [2]SchoolofMaterialsScience＆Engineering,HarbinInstituteofTechnology,Harbin150001,China |
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| 基金项目： | This project is financially supported by the Natural Science Foundation (No. E5305293) of South China University of Technology. |
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| 摘 要： | The microstructure and hardness of a 2024 aluminum alloy subjected to multi-pass upsetting extrusion at ambient temperature were studied. Experimental results indicated that with the number of upsetting extrusion passes increasing, the grains of the alloy are gradually refined and the hardness increases correspondingly. After ten passes of upsetting extrusion processing, the grain size decreases to less than 200 nm in diameter and the sample maintains its original shape, while the hardness is double owing to equal-axial ultrafine grains and work hardening effect caused by large plastic deformation.
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| 关 键 词： | 显微结构 铝合金 硬度 顶锻挤压多重处理 |
Unique microstructure and property of a 2024 aluminum alloy subjected to upsetting extrusion multiple processing |
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| LIXiaoqiang LIYuanyuan CHENWeiping LONGYan HULianxi WANGErde.Unique microstructure and property of a 2024 aluminum alloy subjected to upsetting extrusion multiple processing[J].Rare Metals,2004,23(1):74-78. |
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| Authors: | LI Xiaoqiang LI Yuanyuan CHEN Weiping LONG Yan Hu Lianxi Wang Erde |
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| Abstract: | The microstructure and hardness of a 2024 aluminum alloy subjected to multi-pass upsetting extrusion at ambient temperature were studied. Experimental results indicated that with the number of upsetting extrusion passes increasing, the grains of the alloy are gradually refined and the hardness increases correspondingly. After ten passes of upsetting extrusion processing, the grain size decreases to less than 200 nm in diameter and the sample maintains its original shape, while the hardness is double owing to equal-axial ultrafine grains and work hardening effect caused by large plastic deformation. |
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| Keywords: | metal microstructure upsetting extrusion multiple processing property |
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