Investigation of electron beam welding on AZ91D-F extrusive plates

被引：5

作者：

Chi, CT ^{[1
]}

Chao, CG

Huang, CA

Lee, CH

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

[2] Chang Gung Univ, Dept Mech Engn, Taoyuan 333, Taiwan

[3] Chung Shan Inst Sci & Technol, Syst Mfg Ctr, Taipei 237, Taiwan

来源：

PROGRESS ON ADVANCED MANUFACTURE FOR MICRO/NANO TECHNOLOGY 2005, PT 1 AND 2 | 2006年 / 505-507卷

关键词：

electron beam welding; optimum parameter; stress concentration; heat affected zone;

D O I：

10.4028/www.scientific.net/MSF.505-507.193

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron beam welding (EBW) is currently the most advanced jointed technology because of its superior welding precision and larger depth-width ratio than other conjunctive methods. The high vacuum environment of EBW is favorable for the welding of magnesium alloys to prevent the active metals from oxidation. In this study, a home-made 11mm-thick AZ91D extrusive plate was used. By operating and comparing the changeable welding parameters, the optimum condition has been determined as 113mA, 40kV, 73.3mm/s and focal position at bottom. 82% and 89% of the matrix material strength were obtained by stress and non-stress concentration weldments, respectively. Under other worse parameters, the reduction of the strength of EBW for AZ91D-F resulted from four factors, which were undercuts, heat affected zone (HAZ), hot cracking, and cavities.

引用

页码：193 / 198

页数：6

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