Gas tungsten arc welding of 7075 aluminum alloy: microstructure properties, impact strength, and weld defects

2018 ◽  
Vol 5 (6) ◽  
pp. 066540 ◽  
Author(s):  
Bekir Çevik
Keyword(s):  
Aluminum Alloy ◽  
Impact Strength ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
7075 Aluminum Alloy ◽  
Weld Defects ◽  
Gas Tungsten Arc ◽  
Alloy Microstructure ◽  
Gas Tungsten

Measurements of Residual Stress and Angular Distortion of 7075 Aluminum Alloy after Gas Tungsten Arc Welding

2013 ◽  
Vol 302 ◽  
pp. 452-456
Author(s):  
Shih Jeh Wu ◽  
Chiao Wei Chung ◽  
Chen Ming Kuo
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Arc Welding ◽  
Imaging System ◽  
Diffraction Method ◽  
Gas Tungsten Arc Welding ◽  
Angular Distortion ◽  
7075 Aluminum Alloy ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

7075 aluminum alloy is one of the most popular materials for structure. There are lots of demands for welding these structural materials. During the fast high temperature heating and cooling process serious residual stress is generated that causes the deterioration of structure strength. In this study, we investigate the residual stress induced in 7075 aluminum alloy after gas tungsten arc welding. X-ray diffraction method is applied to measure the residual stress under different joint angles. The angular distortion is also measured by a 3-D imaging system. Results show that both residual stress and angular distortion increase with the preparation angle.

Welding of Aluminum Alloy by Gas Hollow Tungsten Arc Welding Method in a Vacuum. A Study on Gas Tungsten Arc Welding in Space (Report 2).

1996 ◽  
Vol 14 (4) ◽  
pp. 633-640 ◽  
Author(s):  
Yoshikazu Suita ◽  
Yoshiyuki Tsukuda ◽  
Noboru Terajima ◽  
Hisashi Takahashi ◽  
Masanobu Ogasawara ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Welding Method ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

Microstructure Characterization of Pure Tungsten Electrodes Used in Gas Tungsten Arc Welding of Aluminum Alloy

2017 ◽  
Vol 728 ◽  
pp. 91-95
Author(s):  
Kittichai Sojiphan
Keyword(s):  
Aluminum Alloy ◽  
Grain Growth ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Pure Tungsten ◽  
Tungsten Electrode ◽  
Aluminum Alloy 5083 ◽  
Gas Tungsten Arc ◽  
Tungsten Electrodes ◽  
Gas Tungsten

Autogenous gas tungsten arc welding (GTAW) using different non-consumable pure tungsten electrodes (EWP) from eight different manufacturers was performed on aluminum alloy 5083 samples. Due to the limited literatures of how tungsten microstructure may affect the weld quality, this paper attempts to investigate the change in microstructure of tungsten electrode after welding compared to the original microstructure in as-received condition. The scanning electron micrograph results reveal different grain shapes and sizes and also different grain growth rate during welding. It was found that the ability to control the grain growth or limit grain size within the balled end of pure tungsten electrode during aluminum welding plays a very important role in determining the quality of the electrode and how long the electrode would last.

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