Effect of Pulse Frequency on Microstructural and Corrosion Properties of Inconel 718 Gas Tungsten Arc Weldments

2019 ◽  
Vol 72 (5) ◽  
pp. 1299-1311 ◽  
Author(s):  
N. Anbarasan ◽  
S. Jerome ◽  
Gandamalla Suresh ◽  
R. Oyyaravelu
Keyword(s):  
Inconel 718 ◽  
Pulse Frequency ◽  
Corrosion Properties ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

INVESTIGATION OF PULSE FREQUENCY ON FUSION ZONE CHARACTERISTICS OF GTA WELDED AZ31B MAGNESIUM ALLOY JOINTS

2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Subravel V
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Fusion Zone ◽  
Welding Speed ◽  
Pulse Frequency ◽  
Pulsed Current ◽  
Az31b Magnesium Alloy ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Different Levels

In this investigation an attempt has been made to study the effect of welding on fusion characteristics of pulsed current gas tungsten arc welded AZ31B magnesium alloy joints. Five joints were fabricated using different levels of welding speed (105 mm/min –145 mm/min). From this investigation, it is found that the joints fabricated using a welding speed of 135 mm/min yielded superior tensile properties compared to other joints. The formation of finer grains and higher hardness in fusion zone and uniformly distributed precipitates are the main reasons for the higher tensile properties of these joints

Mitigation of hot cracking in Inconel 718 superalloy by ultrasonic vibration during gas tungsten arc welding

2018 ◽  
Vol 740 ◽  
pp. 870-878 ◽  
Author(s):  
R. Thavamani ◽  
V. Balusamy ◽  
Jayakrishnan Nampoothiri ◽  
R. Subramanian ◽  
K.R. Ravi
Keyword(s):  
Ultrasonic Vibration ◽  
Arc Welding ◽  
Inconel 718 ◽  
Gas Tungsten Arc Welding ◽  
Hot Cracking ◽  
Gas Tungsten Arc ◽  
Inconel 718 Superalloy ◽  
Gas Tungsten

Improvement in stress rupture properties of inconel 718 gas tungsten arc welds using current pulsing

2005 ◽  
Vol 40 (6) ◽  
pp. 1497-1500 ◽  
Author(s):  
G. D. Janaki Ram ◽  
A. Venugopal Reddy ◽  
K. Prasad Rao ◽  
G. Madhusudhan Reddy
Keyword(s):  
Inconel 718 ◽  
Stress Rupture ◽  
Gas Tungsten Arc ◽  
Stress Rupture Properties ◽  
Gas Tungsten ◽  
Gas Tungsten Arc Welds ◽  
Rupture Properties

Effect of Pulsed Current Gas Tungsten Arc Welding Parameters on Microstructure of Titanium Alloy Welds

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
M. Balasubramanian ◽  
V. Jayabalan ◽  
V. Balasubramanian
Keyword(s):  
Grain Size ◽  
Titanium Alloy ◽  
Weight Ratio ◽  
Gta Welding ◽  
Pulse Frequency ◽  
Welding Parameters ◽  
Pulsed Current ◽  
Thin Sections ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

Titanium is one of the most important nonferrous metals, which finds extensive application in aerospace and chemical industries, because of its light weight, excellent corrosion resistance and high strength to weight ratio. Single pass gas tungsten arc (GTA) welding of thin sections of Ti–6Al–4V was accomplished with pulsing current technique and was found to be superior to conventional continuous current process in terms of grain refinement in the fusion zone. In this investigation, an attempt was made to study the effect of pulsed current GTA welding parameters on titanium alloy weld characteristics such as grain size and hardness. It was revealed that at an optimum value of 6 Hz pulse frequency and 80A peak current, the hardness was maximum and the grain size was minimum. Pulsing current in inert gas welding was found to be beneficial in titanium welding.

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