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成形温度对SiC_P/Al复合材料性能的影响

Effects of Forming Temperature on Properties of SiC_P /Al Composite

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【作者】 程南璞曾苏民王水兵李春红陈志谦潘复生

【Author】 CHENG Nan-pu1,2, ZENG Su-min1,2,3, WANG Shui-bing2, LI Chun-hong2, CHEN Zhi-qian2, PAN Fu-sheng4 (1.School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2.School of Materials Science and Engineering, Southwest University, Chongqing 400715, China; 3.Southwestern Aluminum Fabrication Plant, Chongqing 401326, China; 4.School of Materials Science and Engineering, Chongqing University, Chongqing 400045, China)

【机构】 中南大学材料科学与工程学院西南大学材料科学与工程学院重庆大学材料科学与工程学院 湖南长沙410083 西南大学材料科学与工程学院重庆400715湖南长沙410083 西南大学材料科学与工程学院重庆400715 西南铝加工厂重庆401326重庆400045

【摘要】 采用粉末冶金的方法制备12%SiC_p/6066Al(体积分数)复合材料,研究了热压与热挤压成形温度对复合材料性能的影响。结果表明,热挤压有利于SiC颗粒在基体中的再分布且是粉末冶金法制备SiC颗粒增强铝基复合材料的必要工艺,而热压则有利于提高增强颗粒与基体的界面结合强度;在高于基体固相点温度热压烧结而低于固相点温度热挤压时,金属基体强度高且界面结合牢固,复合材料的性能最佳。本工艺中12%SiCp/6066Al的最佳热压温度为560℃,热挤压温度为430℃。

【Abstract】 The effects of hot pressing and hot extrusion temperature on the properties of 12%SiC_p/6066 Al (volume fraction) composite prepared by powder metallurgy were studied. The results show that the hot extrusion is an essential process of preparing SiC particale reinfored composite by powder metallurgy and is of benefit to the redistribution of SiC particle in metal matrix.The hot pressing will improve the interfacial cohesion strength between SiC particle and metal matrix. When hot pressed at the temperature which is higher than the solidus curve and hot extruded at the temperature which is lower than that, the strength of the composite is stronger due to the high strength of metal matrix and interfacial cohesion. The best temperature parameters of hot pressing and hot extrusion of the composite(12%SiC_p /6066Al) is 560℃ and 430℃, respectively.

【基金】 重庆市科技计划基金资助项目(SCTC2004DE002)
  • 【文献出处】 热加工工艺 ,Hot Working Technology , 编辑部邮箱 ,2007年02期
  • 【分类号】TB331
  • 【被引频次】10
  • 【下载频次】269
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