| 等径通道挤压中晶粒细化影响因素的研究进展 |
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| 引用本文： | 索涛,李玉龙. 等径通道挤压中晶粒细化影响因素的研究进展[J]. 材料科学与工程学报, 2004, 22(1): 132-137 |
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| 作者姓名： | 索涛 李玉龙 |
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| 作者单位： | 西北工业大学飞机系,陕西,西安,710072 |
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| 摘 要： | 本文总结了近些年等径通道挤压(equal-channel angular pressing,简称ECAP)技术晶粒细化的机理、影响晶粒细化的因素及挤压后材料宏观力学性能的改善等方面的研究进展,并结合金属塑性变形理论进行了解释.最后提出了几项需要进一步深入研究的工作.
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| 关 键 词： | 等径通道挤压 晶粒细化 等效应变 选区电子衍射 大角度晶界 等轴晶粒 |
| 文章编号： | 1004-793X(2004)01-0132-06 |
| 修稿时间： | 2003-05-08 |
Progress in Influence Factor of Grain Refinement during Equal-channel Angular Pressing |
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| SUO Tao,LI Yu-long. Progress in Influence Factor of Grain Refinement during Equal-channel Angular Pressing[J]. Journal of Materials Science and Engineering, 2004, 22(1): 132-137 |
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| Authors: | SUO Tao LI Yu-long |
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| Abstract: | The theory of grain refinement during equal-channel angular pressing is explained. Some progress in influence factor during ECAP, especially the number of pressing, pressure speed and temperature, pressing route and channel angle, is summarized in this paper. The plasticity theory is also used to analyze the effects of these factors. In the end, several future topics are presented. |
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| Keywords: | equal-channel angular pressing grain refinement effective strain selected area diffraction high angle grain boundary equiaxed grain |
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