| 纯铜挤扭工艺数值模拟与实验研究 |
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| 引用本文： | 王成,李萍,薛克敏,李晓,章凯.纯铜挤扭工艺数值模拟与实验研究[J].中国有色金属学报,2011,21(12). |
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| 作者姓名： | 王成 李萍 薛克敏 李晓 章凯 |
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| 作者单位： | 合肥工业大学材料科学与工程学院,合肥,230009 |
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| 基金项目： | 国家自然科学基金资助项目(50875072); 霍英东教育基金会资助项目(121053); 安徽省优秀青年科技基金计划(10040606Y21) |
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| 摘 要： | 运用有限元模拟软件Msc.Marc对纯铜挤扭工艺变形特征进行研究,分析挤扭变形过程中应变分布以及应变分量的变化趋势.采用自行设计的挤扭模具,在室温下进行了纯铜的一道次挤扭试验.结果表明:变形可分为变形开始、完全充满、逐步挤出3个阶段;应变呈中心低、边缘高的分布;变形过程中正应变分量小,切应变分量较大,变形以剪切变形为主.挤扭过程中存在滑移和孪生两种变形方式;挤扭后试样的硬度得到显著提高,在横截面呈现边缘高、中心低的分布趋势.
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| 关 键 词： | 纯铜 挤扭变形 数值模拟 显微组织 显微硬度 |
Numerical simulation and experimental research on pure copper by twist extrusion |
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| WANG Cheng
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LI Ping
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XUE Ke-min
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LI Xiao
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ZHANG Kai.Numerical simulation and experimental research on pure copper by twist extrusion[J].The Chinese Journal of Nonferrous Metals,2011,21(12). |
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| Authors: | WANG Cheng LI Ping XUE Ke-min LI Xiao ZHANG Kai |
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| Affiliation: | WANG Cheng,LI Ping,XUE Ke-min,LI Xiao,ZHANG Kai (School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | The finite element simulation about pure copper deformation during twist extrusion(TE) was carried out by the simulation software MSC.Marc,the procedure steps of TE,the distribution of effective strain and the change of strain component were analyzed.The experiment about pure copper at room temperature during TE was carried out using this own die.The results show that the TE deformation can be divided into there steps.The value of the effective strain in the edge area is much larger than that of the center ... |
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| Keywords: | pure Cu twist extrusion deformation numerical simulation microstructure microhardness |
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