壓鑄TiC/Al-9Si-1.4Cu-0.5Mg復合材料的拉伸性能

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基金項目:

國家自然科學基金資助項目(No.59774032)

江西省自然科學基金資助項目(No.975018)

Tensile Properties of Diecasting TiC/Al€Si€.4Cu€.5Mg Composite Prepared by Melt in Situ Reaction Technique

1. State Key Lab for Adv Met Mater, UST Beijing, Beijing 100083, China;
2. Department of Mechanical and Electronic Engineering, Nanchang University, Nanchang 330029, China

摘要: 利用熔鑄-原位反應和壓鑄成形技術制備了TiC/Al-9Si-1.4Cu-0.5Mg復合材料,測試了復合材料的拉伸性能.結果表明:TiC/Al-9Si-1.4Cu-0.5Mg復合材料的室溫極限拉伸強度為354MPa,比基體合金提高26%;260℃時復合材料的極限拉伸強度為272MPa,比基體合金提高46%.復合材料的延伸率與Al-9Si-1.4Cu-0.5Mg合金相當.討論了進一步提高熔鑄一原位反應TiC/Al-9Si-1.4Cu-0.5Mg復合材料拉伸強度的途徑.
- 原位反應 /
- 鋁基復合材料 /
- 壓鑄 /
- 拉伸性能
Abstract: 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.
- in situ reaction /
- aluminum matrix composites /
- diecasting /
- tensile property