Microstructure and Mechanical Properties of an AlN/Mg-Al Composite Synthesized by Al-AlN Master Alloy

被引：11

作者：

Li, Zengqiang ^{[1
]}

Gao, Tong ^{[1
]}

Xu, Qingfei ^{[1
]}

Yang, Huabing ^{[1
]}

Han, Mengxia ^{[1
]}

Liu, Xiangfa ^{[1
]}

机构：

[1] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan, Shandong, Peoples R China

来源：

INTERNATIONAL JOURNAL OF METALCASTING | 2019年 / 13卷 / 02期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Al-12; 5AlN master alloy; AlN; Mg-Al composite; microstructure; mechanical properties; METAL-MATRIX COMPOSITES; COMPRESSIVE RESPONSE; MAGNESIUM; PARTICLES; ALUMINUM; TENSILE;

D O I：

10.1007/s40962-018-0261-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In this work, a kind of AlN particles reinforced Mg-Al matrix composite was fabricated by introducing Al-12.5AlN master alloy into the Mg melt during casting. In the 0.8AlN/Mg-8Al composite, the nano-sized AlN particles are uniformly distributed, exhibiting a clean interface with the matrix. The introduction of AlN results in the refinement of -Mg grains through modifying its dendrite morphology, and the -Mg17Al12 intermetallic was also changed from continuous coarse-like to fine morphology. As a result, compared with Mg-8Al matrix alloy, the tensile strength and elongation of the 0.8AlN/Mg-8Al composite were increased by 31% and 213%, respectively. The strengthening mechanism and fracture behaviors were discussed.

引用

页码：384 / 391

页数：8

共 25 条

[1] EFFECT OF A NOVEL Al-SiC GRAIN REFINER ON THE MICROSTRUCTURE AND PROPERTIES OF AZ91E MAGNESIUM ALLOY [J].