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| Al-1.04Mg-0.85Si-0.01Cu铝合金的热压缩变形行为 | |
| 引用本文： | 党小荔,杨伏良,丁珣,刘攀,戴准. Al-1.04Mg-0.85Si-0.01Cu铝合金的热压缩变形行为[J]. 机械工程材料, 2012, 0(5): 84-88 |
| 作者姓名： | 党小荔 杨伏良 丁珣 刘攀 戴准 |
| 作者单位： | 中南大学材料科学与工程学院,有色金属材料科学与工程教育部重点实验室 |
| 基金项目： | 国家“863”高新技术计划资助项目(2003AA332070);长沙市科技成果产业化资金专项资助项目(K0902002-11) |
| 摘 要： | 采用Gleeble-1500型热模拟试验机对Al-1.04Mg-0.85Si-0.01Cu铝合金进行热压缩试验,研究了其在300～500℃和0.001～1.0s-1应变速率下的热变形行为,并利用光学显微镜分析了其不同条件变形后的显微组织。结果表明:该合金的热变形行为可用双曲正弦形式的本构方程来描述;应变速率小于1.0s-1时,随温度升高和应变速率增加,合金的变形激活能提高,应变速率为1.0s-1时,变形激活能有所下降;计算得到该合金的热变形激活能为193.029kJ·mol-1,低于6061合金的变形激活能;该合金的热加工性能优良。 |
| 关 键 词： | 铝合金 热变形 显微组织 热变形激活能 |
Hot Compression Deformation Behavior of Al-1.04Mg-0.85Si-0.01Cu Aluminum Alloy |
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| DANG Xiao-li,YANG Fu-liang,DING Xun,LIU Pan,DAI Zhun. Hot Compression Deformation Behavior of Al-1.04Mg-0.85Si-0.01Cu Aluminum Alloy[J]. Materials For Mechanical Engineering, 2012, 0(5): 84-88 | |
| Authors: | DANG Xiao-li YANG Fu-liang DING Xun LIU Pan DAI Zhun |
| Affiliation: | (School of Material Science and Engineering,Key Laboratory of Nonferrous Metal Materials Science and Engineering,Ministry of Education,Central South University,Changsha 410083,China) |
| Abstract: | The hot compression test was performed on Al-1.04Mg-0.85Si-0.01Cu aluminum alloy by Gleeble-1500 thermal simulation tester,the thermal deformation behavior of the alloy in the temperature range of 300-500 ℃ and strain rate range of 0.001-1.0 s-1was studied,and the microstructure was analyzed by optical microscopy after deformation under different conditions.The results show that the hot deformation behavior of the alloy could be described by a constitutive equation in hyperbolic sine function.When the strain rate was less than 1.0 s-1,the deformation activation energy of the alloy rose with the increase of temperature and strain rate,however,the deformation activation energy decreased when the strain rate was 1.0 s-1.The calculated value of hot deformation activation energy of the aluminum alloy was 193.029 kJ·mol-1,and it was less than the deformation activation energy of 6061 alloy.The tested alloy has excellent hot workability. |
| Keywords: | aluminum alloy hot deformation microstructure hot deformation activation energy |
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