| Grain growth of Al-4Cu-Mg alloy during isothermal heat treatment |
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| 引用本文： | Haitao Jiang Miaoquan Li. Grain growth of Al-4Cu-Mg alloy during isothermal heat treatment[J]. 北京科技大学学报(英文版), 2006, 13(1): 67-72. DOI: 10.1016/S1005-8850(06)60016-9 |
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| 作者姓名： | Haitao Jiang Miaoquan Li |
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| 作者单位： | Materials Science and Engineering School, Northwestern Polytechnical University, Xi＇an 710072, China |
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| 基金项目： | 西北工业大学校科研和教改项目 |
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| 摘 要： | The microstructure of an Al-4Cu-Mg alloy during isothermal heat treatment in the Strain Induced Melt Activation （SIMA） process was investigated and the kinetics of grain growth was analyzed, The grain growth during isothermal heat treatment of the Al-4Cu-Mg alloy coincided with the Ostwald ripening theory. During isothermal heat treatment, both grain shape and the high volume fraction of solid phase have significant effects on grain growth. Therefore, a new grain growth model based on the Ostwald ripening theory was proposed taking into consideration the grain shape and the volume fraction of solid phase. By comparing the calculated results with the experimental results, it was confirmed that the present model could be applied to grain growth during isothermal heat treatment of the Al-4Cu-Mg alloy in the SIMA process.
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| 关 键 词： | 铝铜镁合金 晶粒生长 半凝固 等温热处理 应变诱导过程 |
| 收稿时间： | 2004-12-24 |
Grain growth of Al-4Cu-Mg alloy during isothermal heat treatment |
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| Haitao Jiang,Miaoquan Li. Grain growth of Al-4Cu-Mg alloy during isothermal heat treatment[J]. Journal of University of Science and Technology Beijing, 2006, 13(1): 67-72. DOI: 10.1016/S1005-8850(06)60016-9 |
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| Authors: | Haitao Jiang Miaoquan Li |
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| Affiliation: | Materials Science and Engineering School, Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | The microstructure of an Al-4Cu-Mg alloy during isothermal heat treatment in the Strain Induced Melt Activation (SIMA)process was investigated and the kinetics of grain growth was analyzed. The grain growth during isothermal heat treatment of the Al4Cu-Mg alloy coincided with the Ostwald ripening theory. During isothermal heat treatment, both grain shape and the high volume fraction of solid phase have significant effects on grain growth. Therefore, a new grain growth model based on the Ostwald ripening theory was proposed taking into consideration the grain shape and the volume fraction of solid phase. By comparing the calculated results with the experimental results, it was confirmed that the present model could be applied to grain growth during isothermal heat treatment of the Al-4Cu-Mg alloy in the SIMA process. |
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| Keywords: | grain growth semi-solid isothermal heat treatment Al-4Cu-Mg alloy |
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