Effect of gas tungsten arc welding parameters on the corrosion resistance and the residual stress of heat affected zone

2020 ◽  
Vol 107 ◽  
pp. 104200 ◽  
Author(s):  
B.A. Kessal ◽  
C. Fares ◽  
M. Hadj Meliani ◽  
A. Alhussein ◽  
O. Bouledroua ◽  
...  
Keyword(s):  
Residual Stress ◽  
Corrosion Resistance ◽  
Heat Affected Zone ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Welding Parameters ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

Experiment Design with Full Factorial in Gas Tungsten Arc Welding Parameters on Aluminium Alloy 5083

2013 ◽  
Vol 711 ◽  
pp. 183-187 ◽  
Author(s):  
Prachya Peasura
Keyword(s):  
Arc Welding ◽  
Parent Phase ◽  
Welding Current ◽  
Alternating Current ◽  
Gas Tungsten Arc Welding ◽  
Welding Parameters ◽  
Current Electrode ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Full Factorial

This research was to study of gas tungsten arc welding (GTAW) welding parameters that affects to the mechanical properties of aluminum alloy AA5083 welding with GTAW. The full factorial design was experiment. The factors was study in type of polarity on alternating current (AC), direct current electrode negative (DCEN) and direct current electrode positive (DCEP), levels of welding current for 180,200,220 and 240 amp. The specimen to analyses the physical properties has microstructure and hardness of weld metal and heat affected zone. The result showed that type of welding current and levels of welding current interaction hardness at the level of confidence 95% (P-value<0.05). The factor hardness maximum of weld metal was alternating current at level of current 240 amp. and hardness of 136.53 HV. The factor hardness maximum of HAZ value was alternating current at level of welding 220 amp. and hardness of 169.43 HV. The welding parameters can result in increasing Mg2Si intensity in parent phase. It can also be observed that Mg2Si at the parent phase decreased due to high welding current in HAZ.This research can be used as information in choosing how to welding parameter for gas tungsten arc welding of aluminum alloy.

Microstructure and Corrosion Behavior of Cast A356 and Wrought AA6061 Aluminium Alloy Welds

2010 ◽  
Vol 117 ◽  
pp. 37-42
Author(s):  
K.Ratna Kumar ◽  
G. Madhusudhan Reddy ◽  
K. Srinivasa Rao
Keyword(s):  
Corrosion Resistance ◽  
Electron Beam ◽  
Friction Stir Welding ◽  
Arc Welding ◽  
Electron Beam Welding ◽  
Gas Tungsten Arc Welding ◽  
Fusion Welding ◽  
Friction Stir ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

In this work, it was intended to improve the corrosion resistance of welds of A356 and AA6061 by adopting mainly a special welding techniques, viz., pulsed current gas tungsten arc welding (PCGTAW), electron beam welding (EBW) and friction stir welding (FSW). It was found that the corrosion resistance of A356 and AA6061 welds could be improved by PCGTAW technique rather than continuous current gas tungsten arc welding (CCGTAW). It can be further improved by using electron beam welding. Improved corrosion resistance in A356 welds could be obtained by selecting T6 temper rather than as cast condition. In the case of AA6061, improved corrosion resistance was achieved by selecting T4 temper rather than T6 temper. As for as the welding techniques, friction stir welding (FSW) is useful than fusion welding techniques like CCGTAW,PCGTAW and EBW for improving the corrosion resistance of both the welds.

Application of 23 Factorial Design Experiments for Gas Tungsten Arc Welding Parameters on ASTM A36 Steel Welds

2012 ◽  
Vol 246-247 ◽  
pp. 707-711
Author(s):  
Prachya Peasura
Keyword(s):  
Carbon Steel ◽  
Arc Welding ◽  
Welding Current ◽  
Gas Tungsten Arc Welding ◽  
Welding Parameters ◽  
Tungsten Electrode ◽  
Current Electrode ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
And Tungsten

ASTM A36 carbon steel is the most commonly available of the hot-rolled steels. This specification covers carbon steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes. The research was to study the in effected of gas tungsten arc welding parameters which effects the hardness and physical characteristics of welding for carbon steel ASTM A36. The specimen was carbon steel sheet metal 6 mm thick. The 23 factors experiment was used polarity direct current electrode negative (DCEN) and alternating current (AC), welding current at 90 and100 amperes with tungsten electrode angles at 30 and 60degree. The weld sample was test by hardness and penetration. The result showed that polarity, welding current and tungsten electrode angle had on interaction on hardness and penetration at 95% confidence (p-value < 0.05).The factors made maximum hardness was polarity AC, welding current 100 amp. and tungsten angle 60๐of 803.16 HV. The factors made maximum penetration was polarity DCEN, welding current 100 amp. and tungsten angle 60๐ of 2.71mm. The research data can be used to determine the appropriate gas tungsten arc welding process of carbon steel weld.

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.

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