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| 镁合金复合挤压工艺的有限元模拟 | |
| 引用本文： | 张丁非,张钧萍,胡红军,王小红. 镁合金复合挤压工艺的有限元模拟[J]. 材料热处理学报, 2012, 33(9): 140-144 |
| 作者姓名： | 张丁非 张钧萍 胡红军 王小红 |
| 作者单位： | 1. 重庆大学材料科学与工程学院,重庆400045 国家镁合金材料工程技术研究中心,400044 2. 重庆大学材料科学与工程学院,重庆,400045 3. 重庆理工大学材料科学与工程学院,重庆,400050 4. 西南石油大学材料科学与工程学院,四川成都,610500 |
| 基金项目： | 国家“973”重大基础研究项目，国家杰出青年科学基金，重庆市科技攻关项目，重庆市科委资助项目，重庆大学研究生科技创新基金个人项目 |
| 摘 要： | 研究将普通挤压和等通道角挤压工艺结合而开发出的新型复合挤压工艺。采用有限元技术建立具有不同摩擦系数和不同转角的模型,模拟镁合金复合挤压过程,分析复合挤压力变化特征,以及挤压过程的应变累积情况。结果表明,摩擦系数增大或者通道角减小,复合挤压的挤压力和等效应变增加。摩擦和转角均会引起变形的不均匀性,摩擦因数越大,通道转角越小,其不均匀性越大。在摩擦因数为0.3,通道转角为120°时可以获得较大且均匀的等效应变。 |
| 关 键 词： | 复合挤压 有限元模拟 挤压载荷 等效应变 摩擦 |
Integrated extrusion process of magnesium alloy based on FEM simulation |
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| ZHANG Ding-fei,ZHANG Jun-ping,HU Hong-jun,WANG Xiao-hong. Integrated extrusion process of magnesium alloy based on FEM simulation[J]. Transactions of Materials and Heat Treatment, 2012, 33(9): 140-144 | |
| Authors: | ZHANG Ding-fei ZHANG Jun-ping HU Hong-jun WANG Xiao-hong |
| Affiliation: | 1,4(1.College of Materials Science and Engineering,Chongqing University,Chongqing,400045,China; 2.National Engineering Research Center for Magnesium Alloys,Chongqing 400044,China; 3.College of Materials Science and Engineering,Chongqing University of Technology,Chongqing 400050,China; 4.College of Materials Science and Engineering,Southwest Petroleum University,Chengdu 610500,China) |
| Abstract: | A new integrated extrusion(IE)process combining extrusion and equal channel angle extrusion was investigated.The integrated extrusion process,the character of extrusion load and the accumulation of effective strain were discussed based on FEM using models of different friction factor and channel angle.The results show that increaseing friction factor or reducing channel angle can increase the extrusion force and effective strain of integrated extrusion.Both friction and channel angle result in deformation inhomogeneity.Larger friction factor and less channel angle lead to more deformation inhomogeneity.Larger and more uniform effective strain could be obtained when the friction factor is 0.3 and the channel angle is 120°. |
| Keywords: | integrated extrusion finite element simulation extrusion force effective strain |
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