Functionally graded Mg2Si/Al composite produced by an electric arc remelting process

被引：19

作者：

Qin, Q. D. ^{[1
]}

Zhao, Y. G. ^{[1
]}

Cong, P. J. ^{[1
]}

Liang, Y. H. ^{[1
]}

Zhou, W. ^{[1
]}

机构：

[1] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Dept Mat Sci & Engn, Changchun 130025, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 420卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

electric arc treatment; Mg2Si; Al MMCs; microstructure;

D O I：

10.1016/j.jallcom.2005.10.041

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A graded Composite Of Mg2Si/AI has successfully been fabricated by an electric arc remelting process. The results show that the graded microstructure of the composite consists of a large amount Of Mg2Si primary particles surrounded by clouds of alpha-Al particles. The primary Mg2Si particles gradually increase in size, while there is a decrease in length of the dendrites with distance from the bottom. In addition, the primary Mg2Si dendritic crystals have certain orientations tending to be identical to the direction from top to bottom, and the dendritic crystals in the same array are almost parallel. The morphology of eutectic Mg2Si is identified as fine and short fibrous like. The microhardness of graded material along the graded microstructure gradual increased with increasing distance from the top part. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：121 / 125

页数：5

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