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| ECAPT 过程中 TE 工艺对 ECAP 变形规律的影响 |
| Effects of Subsequent TE Process on the Material Deformed by ECAP during ECAPT Process |
| Received:April 24, 2013 Revised:August 01, 2013 |
| DOI：10.3969/j.issn.1674-6457.2013.05.003 |
| 中文关键词: 等径角挤扭( ECAPT) 数值模拟 应变累积 |
| 英文关键词: equal channel angular pressing and torsion numerical simulation accumulation of strain |
| 基金项目: |
| Author Name | Affiliation | | DONG Fei | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China | | HUA Rui | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China | | QIAN Chen-hao | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China | | LI Ping | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China |
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| 中文摘要: |
| 通过对纯铝等径角挤压( ECAP) 和等径角挤扭( ECAPT) 变形行为的数值模拟,获得了材料在不同工艺下的应变和损伤情况。 结果表明,在 ECAPT 工艺中试样通过 ECAP 通道后能获得比单独的 ECAP 更高的应变累积,应变累积量随 TE 通道螺旋角 茁 的增大而增大,同时试样内部的应变分布也得到改善,试样在受到 TE 工艺的背压后材料表面受到剪切破坏的可能性也明显降低。 |
| 英文摘要: |
| The distributions of the strain and damage of blank were obtained by the numerical simulation of equal channel angular pressing ( ECAP) and equal channel angular pressing & torsion ( ECAPT) with aluminum 1100. Results indicate that the blank through the ECAP channel in ECAPT accumulates more strains than those of the simple ECAP, and the value of the effective strain will increase with the helical angle 茁 of TE channel increasing. What's more, the distribution of the strain of the part is more homogenous, and the possibility of the damage decreases obviously when the part is forced by the back pressure of TE. |
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