Effect of modified AA4043 filler on corrosion behavior of AA6061 alloy GTA welds

被引：0
|
作者：
N. Ramanaiah
K. Prasad Rao
机构：
[1] Andhra University College of Engineering (A),Department of Mechanical Engineering
[2] Indian Institute of Technology Madras,Department of Metallurgical and Materials Engineering
来源：
The International Journal of Advanced Manufacturing Technology | 2013年 / 64卷
关键词：
GTA welding; Aluminum alloys; Corrosion; Grain refiners;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The corrosion behavior of the fusion zone of gas tungsten arc (GTA) welds of AA6061 alloy was studied. The role of GTA welding techniques such as continuous current and pulsed current (PC) with reference filler (AA4043) was studied. The role of the addition of different grain refiners such as scandium (Sc), zirconium, and Tibor to the reference filler was studied. Dynamic polarization testing was used to determine the pitting corrosion resistance of the fusion zone. Optical microscopy and scanning electron microscopy studies were carried out to find the mechanism of corrosion. Out of all the grain refiners studied, better corrosion resistance was observed with 0.5 % Sc addition to fusion zone through reference filler and PC technique.
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收藏
页码：1545 / 1554
页数：9
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