| 等效应变量对等径角挤压的2A12铝合金力学性能的影响 |
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| 引用本文： | 毕见强,孙康宁,刘睿,王素梅,范润华.等效应变量对等径角挤压的2A12铝合金力学性能的影响[J].塑性工程学报,2005,12(6):42-44,48. |
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| 作者姓名： | 毕见强 孙康宁 刘睿 王素梅 范润华 |
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| 作者单位： | 山东大学材料液态结构及其遗传性教育部重点实验室,山东省工程陶瓷重点实验室,济南,250061 |
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| 基金项目： | 国家自然科学基金资助项目（130170269）. |
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| 摘 要： | 采用内角为105°、外角为45°及内角为90°、外角为30°两套模具对2A12铝合金进行了等径角挤压实验,研究了等效应变量对其力学性能的影响。结果表明,等径角挤压可以显著改善材料的力学性能,而且等效应变量的大小与材料的力学性能密切相关。经过等径角挤压,材料所经受的累积等效应变量达到4时,材料力学性能的提高达到饱和,而且材料所经受的单次等效剪切应变量越大,材料力学性能的提高越迅速,改善越明显。
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| 关 键 词： | 等径角挤压 2A12铝 应变量:力学性能 |
| 文章编号： | 1007-2012（2005）06-0042-03 |
| 收稿时间： | 2005-04-12 |
| 修稿时间： | 2005年4月12日 |
Effect of the effective strain value on mechanical properties of 2A12 alloy pressed by ECAP |
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| BI Jian-qiang,SUN Kang-ning,Liu Rui,WANG Su-mei,FAN Run-hua.Effect of the effective strain value on mechanical properties of 2A12 alloy pressed by ECAP[J].Journal of Plasticity Engineering,2005,12(6):42-44,48. |
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| Authors: | BI Jian-qiang SUN Kang-ning Liu Rui WANG Su-mei FAN Run-hua |
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| Abstract: | 2A12 Al alloy was suffered from equal channel angular pressing(ECAP) in this experiment,in which an ECAP die with the inner angle =105°,outer angle ψ=45°and the inner angle =90°,outer angle ψ=30°. It was studied that the influence of the effective strain value on ultimate strength(UTS),hardness and elongation. It shows that during ECAP the effective strain value of sample passes through the channels is very important for mechanical properties. ECAP can increase their UTS and hardness greatly. When the value of accumulated strain was 4,mechanical properties of 2A12 alloy were best. And the effective strain value of every pass was higher,mechanical properties were better. |
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| Keywords: | equal channel angular pressing (ECAP) 2A12 Al alloy the effective strain value mechanical properties |
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