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

Content Provider	Springer Nature Link
Author	Mostafapour, A. Davoodi, S.
Copyright Year	2015
Abstract	Laser welding is one of the important welding methods with extensive applications in aerospace and automotive industries due to high quality and welding speed. On the other hand, the polarization resistance of welded parts is one of the quality criteria affected by welding parameters. In welded parts, the polarization resistance will be decreased due to some changes in the microstructure and residual stresses. In this study, the effects of different welding parameters on the polarization resistance of AISI 321 were investigated. At first, response surface methodology was used for design of experiments and three input parameters of laser voltage, pulsed laser frequency and the speed of table motion were defined. Nd: YAG laser was used to weld AISI 321 at different conditions. Then, the corrosion test samples were prepared and the polarization resistance of the samples were measured based on open circuit potential and electrochemical impedance spectroscopy. The effects of welding parameters were determined through experimental results obtained during the study. By increasing welding speed and decreasing laser voltage and laser frequency, the polarization resistance decreased. The obtained results could be used in optimization and adjustment of laser welding conditions to prevent the polarization resistance loss of AISI 321.
Starting Page	1129
Ending Page	1136
Page Count	8
File Format	PDF
ISSN	09722815
Journal	Transactions of the Indian Institute of Metals
Volume Number	69
Issue Number	5
e-ISSN	09751645
Language	English
Publisher	Springer India
Publisher Date	2015-11-03
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Laser welding Polarization resistance AISI 321 Electrochemical impedance spectroscopy Metallic Materials Materials Science Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

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