Distribution control of AlN particles in Mg-Al/AlN composites

被引:18
作者
Chen, Jie [1 ]
Bao, Chonggao [1 ]
Ma, Yana [1 ]
Chen, Zihan [1 ]
机构
[1] Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi Provinc, Peoples R China
关键词
Magnesium matrix composite; Particle distribution; Agglomeration; Microstructure; MAGNESIUM MATRIX COMPOSITE; MECHANICAL-PROPERTIES; REINFORCED ALUMINUM; TENSILE PROPERTIES; YAL2; PARTICLES; MICROSTRUCTURE; BEHAVIOR; ALLOYS; SIZE;
D O I
10.1016/j.jallcom.2016.10.190
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 new process for the preparation of ultrafine AlN particles reinforced Mg-Al matrix composites was proposed to control the agglomeration of ultrafine AlN particles. The influence of mechanical milling on the modification of reinforcement particles and the refinement of matrix alloy particles was also investigated. Particles barriers for uniform distribution into matrix grain interiors in P/M process were analyzed. For AlN-Mg mixture, AlN particles were separately cladded in Mg coating and homogeneously distributed in the mixture after milling for 15 h. Mg-Al matrix alloy particles were significantly refined after milling for 20 h, and the strip-type Al was fragmented and uniformly distributed in Mg matrix. There are three critical factors controlling the agglomeration of ultrafine AlN reinforcement in Mg-Al matrix. Finally a fully homogeneous intragranular distribution of AlN particles in Mg-Al matrix was obtained. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:162 / 170
页数:9
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