| ECAPT 工艺对 SiCp/ Al 基复合材料组织和性能的影响 |
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| 引用本文： | 李成铭,李萍,张翔,董飞.ECAPT 工艺对 SiCp/ Al 基复合材料组织和性能的影响[J].精密成形工程,2013,5(2):36-39,81. |
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| 作者姓名： | 李成铭 李萍 张翔 董飞 |
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| 作者单位： | 合肥工业大学材料科学与工程学院 |
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| 基金项目： | 国家自然科学基金(51175138);高等学校博士学科点专项基金(20100111110003) |
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| 摘 要： | 探究了用等径角挤扭(ECAPT)法制备的SiC_p/Al基复合材料组织演化过程和力学性能。比较了2种体积分数的SiC_p(8.75%和35%)复合材料在ECAPT中组织演化规律,测试了其硬度值及致密度。结果表明,ECAPT形变量大,细化晶粒能力强,SiC_p分布均匀性好,其致密效果SiC_p体积分数大的(35%)比小的(8.75%)差;并且体积分数为35%的SiCp复合材料存在"拱桥效应",但颗粒细化效果优于体积分数为8.75%的SiC_p。
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| 关 键 词： | 大塑性变形 等径角挤扭 金属基复合材料 SiC颗粒 显微组织 力学性能 |
| 收稿时间： | 2012/12/9 0:00:00 |
| 修稿时间： | 2/1/2013 12:00:00 AM |
Microstructure and Properties of ECAPT of SiCp/ Al Particulate Composite |
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| LI Cheng-ming,LI Ping,ZHANG Xiang and DONG Fei.Microstructure and Properties of ECAPT of SiCp/ Al Particulate Composite[J].Journal of Netshape Forming Engineering,2013,5(2):36-39,81. |
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| Authors: | LI Cheng-ming LI Ping ZHANG Xiang and DONG Fei |
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| Affiliation: | (School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China) |
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| Abstract: | This article is about microstructure evolution of SiCp/ Al matrix composites in the processing of equal channel angular pressing and twist extrusion ( ECAPT) and mechanical properties of the sample after ECAPT. During ECAPT, microstructure evolution processes of different percentage compositions of SiCp( volume fraction 8. 75% and 35% ) are explored. The effects of ECAPT on different volumes of SiCp/ Al particulate composite's hardness and density are analyzed. It is shown that ECAPT is a tool to get the strong defomation and the good ability to refine grain and distribute SiCp. Density of 35% SiCpcomposite material billet is smaller than that of 8. 75% SiCp, and to 35% SiCpcomposite material ," Arch Bridge Effect" happens, but its refining effect is better than that of 8. 75% SiCp. |
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| Keywords: | SPD ECAPT MMCs SiCp microstructure mechanical property |
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