| 引用本文: | 曹素芳,潘清林,刘晓艳,陆智伦,何运斌,李文斌.Al-Cu-Mg-Ag合金的热变形加工图及其分析[J].材料科学与工艺,2011,19(2):126-129,134.DOI:10.11951/j.issn.1005-0299.20110226. |
| CAO Su-fang,PAN Qing-lin,LIU Xiao-yan,LU Zhi-lun,HE Yun-bin,LI Wen-bin.The thermal deformation processing maps and their analysis of Al-Cu-Mg-Ag alloy[J].Materials Science and Technology,2011,19(2):126-129,134.DOI:10.11951/j.issn.1005-0299.20110226. |
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| 摘要: |
| 为确定Al-Cu-Mg-Ag合金的热加工工艺制度提供理论依据以及便捷的途径,基于动态材料模型(DMM)理论和Ziegler失稳判据,采用Al-Cu-Mg-Ag合金的热变形实验数据,建立了热变形加工图,并利用加工图理论分析了该合金在热变形过程中的变形行为.结果表明:Al-Cu-Mg-Ag合金热变形时有2个失稳区域,一是变形温度为300～400℃、应变速率为0.1～10 s-1的区域,二是变形温度为450～500℃、应变速率为1.0～10 s-1的区域;该合金的热变形参数建议在变形温度350～450℃、应变速率0.001 s-1的范围内选取. |
| 关键词: Al-Cu-Mg-Ag合金 加工图 热变形 动态材料模型 流变失稳 |
| DOI：10.11951/j.issn.1005-0299.20110226 |
| 分类号:TG146.21 |
| 基金项目: |
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| The thermal deformation processing maps and their analysis of Al-Cu-Mg-Ag alloy |
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CAO Su-fang1, PAN Qing-lin1,2, LIU Xiao-yan1, LU Zhi-lun1, HE Yun-bin1, LI Wen-bin1
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1.School of Materials Science and Engineering,Central South University,Changsha 410083,China;2.The Key Laboratory of Nonferrous Materials Science and Engineering of Ministry of Education,Changsha 410083,China
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| Abstract: |
| To provide theoretical foundation and convenient way for the determination of thermal processing technology of Al-Cu-Mg-Ag alloy,the processing maps of this alloy were obtained from the thermal deformation experiment data,based on the dynamic material model(DMM) and Ziegler instability criterion,and the hot deformation behavior was characterized by the analysis of the processing maps.The results show that there are two unstable regions at 300~400 ℃ and 0.1~10 s-1 and at 450~500 ℃ and 1.0~10 s-1.The temperature of 350~450 ℃ and the strain rate of 0.001 s-1 are recommended. |
| Key words: Al-Cu-Mg-Ag alloy processing maps thermal deformation dynamic material mode flow instability |
