Effect of Ti-Si-Mg-Al wire on microstructure and mechanical properties of plasma arc in-situ welded joint of SiCp/Al composites

被引：13

作者：

Lei Yu-cheng ^{[1
,2
]}

Xue Hou-lu ^{[1
]}

Hu Wen-xiang ^{[1
]}

Yan Jiu-chun ^{[2
]}

机构：

[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China

[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷 / 02期

关键词：

plasma arc; in-situ welding; aluminium matrix composites; Ti-Si-Mg-Al flux-cored wire; BEHAVIOR;

D O I：

10.1016/S1003-6326(11)61175-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The influence of Ti-Si-Mg-Al wire on microstructure and mechanical properties of SiCp/Al metal matrix composite joints produced by plasma arc in-situ weld-alloying was investigated. Argon-nitrogen mixture was used as plasma gas and Ti-Si-Mg-Al flux-cored wires as filled composites. Weldments were submitted to tensile test. Meanwhile, the macro morphology and microstructure of the joints were examined. The result shows that the formation of needle-like harmful phase Al4C3 is effectively inhibited and the wettability of molten pool is improved by adding Ti-Si-Mg-Al flux-cored wires. With 15Ti-5Si-5Mg-Al flux-cored wire as filled composite, the maximum tensile strength of the welded joint is 267 MPa, which is up to 83% that of the matrix composites under annealed condition.

引用

页码：305 / 311

页数：7

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