| 6156铝合金热变形行为的研究 |
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| 引用本文： | 朱剑军,邬晔,唐文杰,李剑.6156铝合金热变形行为的研究[J].湖南有色金属,2011,27(3):38-42,59. |
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| 作者姓名： | 朱剑军 邬晔 唐文杰 李剑 |
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| 作者单位： | 湖南稀土金属材料研究院,湖南长沙,410126 |
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| 摘 要： | 在Gleeble-1500热/力模拟机上对试验6156合金进行了热压缩试验,研究了其在温度300～450℃和应变速率0.1～10 s-1条件下的热变形行为.结果表明:热变形过程中的流变应力可以很好地用双曲正弦本构关系来描述,通过优化α值,可以更精确地得到该合金的表观激活能为240.97kJ/mol.根据材料动态模型,计...
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| 关 键 词： | 6156合金 流变应力 本构关系 加工图 |
Study on 6156 Aluminum Alloy Hot Deformation Behavior |
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| ZHU Jian-jun,WU Ye,TANG Wen-jie,LI Jian.Study on 6156 Aluminum Alloy Hot Deformation Behavior[J].Hunan Nonferrous Metals,2011,27(3):38-42,59. |
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| Authors: | ZHU Jian-jun WU Ye TANG Wen-jie LI Jian |
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| Affiliation: | ( Hunan Research Institute of Rare Earth Materials, Changsha 410126, China) |
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| Abstract: | Gleeble- 1500 thermaL/mechanical simulator tests on 6156 alloy hot compression tests were studied in the temperature 300- 450 ℃ and strain rate of 0.1 ~ 10 s^-1 under the conditions of hot deformation behavior. The results show that ： during hot deformation, the flow stress can be well described by the hyperbolic sine constitutive; by optimizing the value of a, it can obtain more accurately the apparent activation energy of the alloy which is 240.97 kJ/mol. According to the dynamic materials model,it calculated and analyzed the 6156 alloy processing maps. With use of hot deformation processing maps, it identified areas of flow instability, and as the deformation temperature and deformation rate decreased gradually, the energy consumption efficiency η in creased. |
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