Influence of extrusion temperature and process parameter on microstructures and tensile properties of a particulate reinforced magnesium matrix nanocomposite

被引：36

作者：

Nie, K. B. ^{[1
]}

Wang, X. J. ^{[1
,2
]}

Xu, L. ^{[1
]}

Wu, K. ^{[1
,2
]}

Hu, X. S. ^{[1
]}

Zheng, M. Y. ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Natl Def Sci & Technol Key Lab Space Mat Behav &, Harbin 150001, Peoples R China

来源：

MATERIALS & DESIGN | 2012年 / 36卷

基金：

中国国家自然科学基金;

关键词：

Metal matrix composite; Extrusion; Microstructure; MECHANICAL-PROPERTIES; COMPOSITES;

D O I：

10.1016/j.matdes.2011.11.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Particulate reinforced magnesium matrix nanocomposites fabricated by semisolid stirring assisted ultrasonic vibration were subjected to extrusion. The results showed that grains of matrix in the SiCp/AZ91 nanocomposites were gradually refined while the amount of SiC nanoparticle bands was decreased with the extrusion temperature increasing from 250 to 350 degrees C. Under the same extrusion conditions, the grain size of the matrix was gradually decreased while the distribution of SiC nanoparticles was improved in the extruded nanocomposites fabricated by decreasing the stirring time. The yield strength and ultimate tensile strength of the nanocomposites were gradually enhanced with increasing the extrusion temperature. Significant improvement of tensile strength was obtained in the nanocomposites fabricated by decreasing the stirring time. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：199 / 205

页数：7

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