Effects of Laser Welding Parameters on Polarization Resistance Of AISI 321 Austenitic Stainless Steel

2015 ◽  
Vol 69 (5) ◽  
pp. 1129-1136 ◽  
Author(s):  
A. Mostafapour ◽  
S. Davoodi
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Laser Welding ◽  
Polarization Resistance ◽  
Welding Parameters ◽  
Aisi 321

Experimental Investigations of Nd:YAG Laser Welding of 630 and 321 Stainless Steel and their Effects on Process Parameters

2009 ◽  
Vol 83-86 ◽  
pp. 384-391
Author(s):  
Seyed Ali Asghar Akbari Mousavi ◽  
A.R. Sufizadeh
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Laser Welding ◽  
Welding Speed ◽  
Gas Flow ◽  
Experimental Investigations ◽  
Welding Parameters ◽  
Beam Diameter ◽  
Electron Microscopic ◽  
Pulse Welding

In this paper, the laser welding of the 630 precipitation hardening stainless steel with the 321 austenitic stainless steel was considered. The experiments were carried out with the pulsed Nd: YAG laser under various welding parameters. The effects of power of laser, voltage, duration of pulse, welding speed, beam diameter and frequency, on the weld volume are investigated. The results show that the weld volume increases with voltage and frequency. The weld volume decreases with welding speed and beam diameter. Moreover, the study shows two effects for the duration of pulse. Up to some value of duration of pulse, the weld volume increases. Exceeding, this limit reduces the weld volume. The optical and scanning electron microscopic tests were carried out. The results show that the martensitic structure is produced in the 630 stainless steel side and the austenitic stainless steel is produced in the 321 stainless steel side. The microhardness tests across the samples were carried out. The results show the maximum hardness is for the 630 stainless steel side and the minimum weld hardness is for the 321 stainless steel side. The high voltage may cause hot cracks in the 321 stainless steel side. The effects of gas flow rate on the microstructure were also considered.

scholarly journals Evaluation of Microstructure and Impact Toughness of Shielded Metal Arc Dissimilar Weldments of High Strength Low Alloy Steel and Austenitic Stainless Steel

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Misbahu A Hayatu ◽  
Emmanuel T Dauda ◽  
Ola Aponbiede ◽  
Kamilu A Bello ◽  
Umma Abdullahi
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Impact Toughness ◽  
Impact Energy ◽  
High Strength ◽  
Impact Testing ◽  
Welding Parameters ◽  
Dissimilar Weld ◽  
Weld Joints ◽  
The Impact

There is a growing interest for novel materials of dissimilar metals due to higher requirements needed for some critical engineering applications. In this research, different dissimilar weld joints of high strength low alloy (HSLA) and 316 austenitic stainless steel grades were successfully produced using shielded metal arc welding (SMAW) process with 316L-16 and E7018 electrodes. Five variations of welding currents were employed within the specified range of each electrode. Other welding parameters such as heat inputs, welding speeds, weld sizes, arc voltages and time of welding were also varied. Specimens for different weld joint samples were subjected to microstructural studies using optical and scanning electron microscopes. The impact toughness test was also conducted on the samples using Izod impact testing machine. The analysis of the weld microstructures indicated the presence of type A and AF solidification patterns of austenitic stainless steels. The results further showed that the weld joints consolidated with E7018 electrode presented comparatively superior impact energy to the weldments fabricated by 316L-16 electrode. The optimum impact energy of E7018-weld joints (51J) was attained at higher welding heat inputs while that of 316L-16-weld joints (35J) was achieved at lower welding heat inputs, which are necessary requirements for the two electrodes used in the experiment. Hence, the dissimilar weld joints investigated could meet requirement for engineering application in offshore and other critical environments.Keywords—Dissimilar metal weld, heat input, impact toughness, microstructures

Influence of Side Assist Gas on Microstructure and Corrosion Resistance of Welds of Austenitic Stainless Steel in Laser Welding

2017 ◽  
Vol 44 (5) ◽  
pp. 0502005
Author(s):  
周媛 Zhou Yuan ◽  
蔡艳 Cai Yan ◽  
衡昊坤 Heng Haokun ◽  
盛洁 Sheng Jie ◽  
李芳 Li Fang
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Laser Welding

scholarly journals Potentiodynamic corrosion studies on laser beam welded austenitic stainless steel AISI 321

2017 ◽  
Vol 263 ◽  
pp. 062031
Author(s):  
Adithya R Nair ◽  
P Niranjhan ◽  
M N Abijith ◽  
M Arivarasu ◽  
M Manikandan ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Laser Beam ◽  
Corrosion Studies ◽  
Steel Aisi ◽  
Aisi 321 ◽  
Stainless Steel Aisi
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