真空压力熔渗与热压烧结制备(SiCp+Al2O3f)/2024Al复合材料的组织与拉伸性能分析

doi:10.11896/j.issn.1005-023X.2018.06.018

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Abstract In this paper, (40%SiCp+10%Al₂O_3f)/2024Al composites were fabricated by vacuum pressure infiltration method and hot pressing sintering method. The resultant two kinds of composites exhibit the room-temperature tensile strength of 364 MPa and 310 MPa, and compactness of 98.78% and 96.42%, respectively. SiC particles aggregation in the hot-pressing sintered compo-sites was revealed by metallographic observation. The comparative TEM analysis confirmed the presence of micropores at the interface of hot-pressing sintered composites which results in compactness decrement, and meanwhile, the favorable matrix-reinforcement interface bonding of the vacuum pressure infiltration composites. This mainly contributes to the better mechanical properties of the vacuum pressure infiltration composites as compared to the hot-pressing sintered ones.

Key words： vacuum pressure infiltration hot pressing sintering aluminum matrix composites interface properties

Published: 25 March 2018

CLC number:

TB331

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	Articles by authors
	XU Hui
	ZHAO Yang
	REN Shubin
	QU Xuanhui

Cite this article:

XU Hui,ZHAO Yang,REN Shubin, et al. Microstructure and Tensile Property of (SiC_p+Al₂O_3f)/2024Al Composites Fabricated by Vacuum Pressure Infiltration and Hot Pressing Sintering:a Comparative Study[J]. Materials Reports, 2018, 32(6): 951-956.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.06.018 OR http://www.mater-rep.com/EN/Y2018/V32/I6/951

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