'In-situ' weld-alloying/laser beam welding of SiCp/6061Al MMC

被引：59
|
作者：
Wang, HM [1 ]
Chen, YL [1 ]
Yu, LG [1 ]
机构：
[1] Beijing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Lab Laser Mat Proc & Surface Engn, Beijing 100083, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2000年 / 293卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
SiCp/Al MMCs; laser beam welding; in-situ weld-alloying; aluminum carbide; titanium carbide; titanium silicide;
D O I：
10.1016/S0921-5093(00)01249-1
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, 'in-situ' weld-alloying/laser beam welding with titanium as alloying element is utilized to join SiCp/6061Al MMC in order to prevent the formation of the needle-like harmful Al4C3 phases in the weld. Microstructure of the weld is characterized as functions of alloying content and processing parameters. Results show that the needle-like harmful aluminum carbides are completely eliminated. A central fusion weld joint reinforced by TiC, Ti5Si3 and Al3Ti is produced by 'in-situ' weld-alloying/laser beam welding of SiCp/6061Al MMC, while some large pores are formed in the partly melted zone. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：1 / 6
页数：6
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