压铸TiC/Al-9Si-1.4Cu-0.5Mg复合材料的拉伸性能  

Tensile Properties of Diecasting TiC/Al-9Si-1.4Cu-0.5Mg Composite Prepared by Melt in Situ Reaction Technique

作　　者：杨滨[1] 陈国香[2] 张济山[1] 

机构地区：[1]北京科技大学新金属材料国家重点实验室,北京100083 [2]南昌大学机电学院,南昌330029

出　　处：《北京科技大学学报》2001年第2期111-113,共3页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目!(No.59774032);江西省自然科学基金资助项目!(No.975018)

摘　　要：利用熔铸－原位反应和压铸成形技术制备了ＴｉＣ／Ａｌ－９Ｓｉ－１．４Ｃｕ－０．５Ｍｇ复合材料，测试了复合材料的拉伸性能．结果表明：ＴｉＣ／Ａｌ－９Ｓｉ－１．４Ｃｕ－０．５Ｍｇ复合材料的室温极限拉伸强度为３５４ＭＰａ，比基体合金提高２６％；２６０℃时复合材料的极限拉伸强度为２７２ＭＰａ，比基体合金提高４６％．复合材料的延伸率与Ａｌ－９Ｓｉ－１．４Ｃｕ－０．５Ｍｇ合金相当．讨论了进一步提高熔铸一原位反应ＴｉＣ／Ａｌ－９Ｓｉ－１．４Ｃｕ－０．５Ｍｇ复合材料拉伸强度的途径．The diecasting TiC/Al-9Si-1 .4Cu-0.5Mg composite formed by melt in situ reaction technique has been successfully fabricated. The tensile properties of the composites were tested. The results have shown that the ultimate tensile strength of the diecasting 5%TiC/Al-9Si-1 .4Cu-0.5Mg composite was 354 MPa and 272 MPa at room temperature and at 260℃ respectively, 26% and 46% increases over the values of unreinforced alloy (280 MPa and 186 MPa) respectively. The tensile elongations of the 5%TiC/Al-9Si-1.4Cu-0.5Mg composite at room temperature and at 260℃ respectively are near upon those of unreinforced alloy. Finally, the way of further improving the strength of TiC/Al-9Si- 1. 4Cu-0. 5Mg composites is also discussed.

关 键 词：铝基复合材料 拉伸性能 熔铸-原位反应 压铸成形技术 极限拉伸强度 碳化钛 硅 铜 镁 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG113.251[金属学及工艺—金属材料]