低频电磁场对n-SiCp/2024复合材料组织与性能的影响*

doi:10.11896/j.issn.1005-023X.2017.010.024

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Abstract The research studied two different kinds of n-SiCp/2024 aluminum matrix composite ingots, with hot backward extrusion and T6 heat treatment, which were processed by low frequency electromagnetic casting (LFEC) and conventional semi-continuous casting (DC) respectively. The OM, TEM, and tensile test were adopted to study the microstructure and mechanical properties variations of the two different kinds of n-SiCp/2024 aluminum matrix composites. The research proved that there were segregations on part of the DC processed n-SiCp/2024 aluminum matrix composite ingots' surface. Most of them located near the grain boundaries in clumps, while only very little of them located within the grain. The LFEC processed n-SiCp/2024 aluminum matrix composite, however, had practically no n-SiCp in clumps and had a clear grain boundary, a uniform microstructure, and an obvious grain refining effect. LFEC process could refine the grain size of n-SiCp/2024 aluminum matrix composite ingots effectively, and its electromagnetic stirring relieved clumps of n-SiCp grain significantly. Compared with the conventional DC process, the LFEC process could improve both the strength and the ductility.

Key words： LFEC n-SiCp/2024 aluminum matrix composite electromagnetic stirring microstructure mechanical properties

Published: 08 May 2018

CLC number:

TG146.2

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	Articles by authors
	GAO Wenlin
	BAI Yaofang
	WANG Hailong
	SUN Gang
	LU Zheng

Cite this article:

GAO Wenlin,BAI Yaofang,WANG Hailong, et al. Effect of Low Frequency Electromagnetic Casting on Microstructure and Properties of n-SiCp/2024 Aluminum Matrix Composite[J]. Materials Reports, 2017, 31(10): 116-120.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.010.024 OR http://www.mater-rep.com/EN/Y2017/V31/I10/116

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