| 道次和路径对非致密体挤扭致密效果的影响 |
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| 引用本文： | 王成,李萍,李晓,章凯. 道次和路径对非致密体挤扭致密效果的影响[J]. 金属成形工艺, 2011, 0(1): 14-17 |
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| 作者姓名： | 王成 李萍 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） |
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| 摘 要： | 运用有限元方法对非致密体材料挤扭（Twist Extrusion，TE）进行分析。通过对纯铜多孔材料挤扭的数值模拟，获得了挤压道次和挤压路径对致密效果的影响。研究结果表明，挤扭工艺可以有效的对非致密体材料进行固结；随着道次增加，所需挤压力也越大，路径a下挤压力大于路径b；挤压道次的增加可以提高试样的有效密度；路径a下致密效果和试样相对密度的均匀性优于路径b。
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| 关 键 词： | 挤扭 大塑性变形 相对密度 数值模拟 |
Effect of Passes and Routes on Compactability of Porous Meterial by Twist Extrusion |
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| WANG Cheng,LI Ping,LI Xiao,ZHANG Kai. Effect of Passes and Routes on Compactability of Porous Meterial by Twist Extrusion[J]. Metal Forming Technology, 2011, 0(1): 14-17 |
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| Authors: | WANG Cheng LI Ping LI Xiao ZHANG Kai |
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| Affiliation: | (School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China) |
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| Abstract: | Pure porous copper was used to investigate tbe deformation of twist extrusion （TE） process via finite element method. Effect of passes and routes on compactability of porous meterial was obtained. The results reveal that TE can be used to the porous meterials consolidation; the load of extrusion is increased with adding of passes,and the load at route a is bigger than that at route b; Increase of passes can significantly increase the value of relative densily; the compactability and uniformity of relative density at route a are better than those at route h. |
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| Keywords: | twist extrusion severe plastic deformation relative density numerical simulation |
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