Effect of TiC nanoparticles on the microstructure and mechanical properties of gas tungsten arc welded aluminum joints

被引：63

作者：

Fattahi, M. ^{[1
]}

Mohammady, M. ^{[1
]}

Sajjadi, N. ^{[2
]}

Honarmand, M. ^{[3
]}

Fattahi, Y. ^{[2
]}

Akhayan, S. ^{[2
]}

机构：

[1] Petr Univ Technol, Tech Inspect Engn Dept, Abadan, Iran

[2] Isfahan Univ Technol, Dept Mat Engn, Esfahan, Iran

[3] Iran Univ Sci & Technol, Sch Met & Mat Engn, Tehran, Iran

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2015年 / 217卷

关键词：

Accumulative roll bonding; TiC nanoparticles; Aluminum matrix composites; Weld metal; Mechanical properties; COMPOSITE; NANOCOMPOSITES; PARTICLES;

D O I：

10.1016/j.jmatprotec.2014.10.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, TiC/Al composite fillers of gas tungsten arc (GTA) welding with different contents of TiC nanoparticles were successfully fabricated by accumulative roll bonding (ARB). The purpose of ARB was to create a uniform distribution of TiC nanoparticles in the fillers and to form a good interfacial bonding between the aluminum matrix and TiC nanoparticles. The microstructure, mechanical properties and fracture surface morphology of the welds were investigated. It was found that TiC nanoparticles decreased the grain size of the primary alpha-Al phase due to the augmented nucleation and retarded growth. The tensile strength and hardness of weld improved with increasing TiC nanoparticle content. The improvement in the mechanical properties was attributed to the uniform distribution of TiC nanoparticles and grain refinement. Therefore, it can be concluded that the TiC/Al composite filler can serve as a suitable filler for GTA welding of aluminum and its alloys. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：21 / 29

页数：9

共 13 条

[1] Comparison of nanostructured Al/B4C composite produced by ARB and Al/B4C composite produced by RRB process [J].