Experimental and modeling investigation on SiCp distribution in powder metallurgy processed SiCp/2024 Al composites

被引：52
作者：
Liu, Z. Y. [1 ]
Wang, Q. Z. [1 ]
Xiao, B. L. [1 ]
Ma, Z. Y. [1 ]
Liu, Y. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 21-22期
关键词：
Analytical modeling; Metal-matrix composites; Powder metallurgy; Reinforcement distribution; ALUMINUM-MATRIX COMPOSITES; PARTICLE-SIZE RATIO; MECHANICAL-PROPERTIES; MICROSTRUCTURE; REINFORCEMENT;
D O I：
10.1016/j.msea.2010.05.006
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
SiCp/2024Al composites were fabricated through the powder metallurgy (PM) technique. The mixing process was modified by using a high ball to charge ratio (BCR), which resulted in improved homogeneity of the SiCp distribution, as well as enhanced tensile strengths of the as-pressed composites. A small particle size ratio of aluminum to SiCp (PSR) and extrusion also improved the uniformity of the SiCp distribution. The improvements by the three approaches were quantitatively analyzed using a critical volume fraction model. The model demonstrates that a small PSR and a large deformation ratio of aluminum particles were two essential factors of improving the homogeneity of the SiCp. A homogeneity analysis using the Dirichlet Tessellation method provided an additional explanation for the model. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：5582 / 5591
页数：10
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