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Article

Prediction of Transient Temperature Distributions for Laser Welding of Dissimilar Metals

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Mechanical Engineering Department, Indian Institute of Technology (ISM), Dhanbad 826004, India
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Mechanical Engineering Department, Calcutta Institute of Technology, Howrah 711316, India
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Department of Mechanical Engineering, Main Campus-Kapurthala, IK Gujral Punjab Technical University, Jalandhar 144603, India
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Department of Mechanical Engineering, G.L. Bajaj Institute of Technology and Management, Greater Noida 201310, India
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Department of Mechanical Engineering, Narowal Campus, University of Engineering and Technology, Narowal 51600, Pakistan
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Department of Automated Mechanical Engineering, South Ural State University, Lenin Prosp. 76, 454080 Chelyabinsk, Russia
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School of Mechanical and Design Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK
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Authors to whom correspondence should be addressed.
Academic Editors: Ping Jiang and Filippo Berto
Appl. Sci. 2021, 11(13), 5829; https://doi.org/10.3390/app11135829
Received: 20 May 2021 / Revised: 15 June 2021 / Accepted: 18 June 2021 / Published: 23 June 2021
(This article belongs to the Special Issue Trends and Innovations in Laser Welding Techniques)
Distribution of temperature during the welding process is essential for predicting and realizing some important welding features such as microstructure of the welds, heat-affected zone (HAZ), residual stresses, and their effects. In this paper, a numerical model was developed using COMSOL Multiphysics of dissimilar laser welding (butt joint) of AISI 316L and Ti6Al4V thin sheet of 2.5 mm thickness. A continuous mode (CW) fiber laser heat source of 300 W laser power was used for the present study. A time-dependent prediction of temperature distributions was attempted. The heat source was assumed as a Hermit–Gaussian analytical function with a moving velocity of 120 mm/min. Both convective and radiant heat loss and phase change of the materials were considered for the analysis. In addition, variation of temperature-dependent material properties was also considered. The maximum and minimum temperature for the two materials at different times and the temperature in the different penetration depths were also predicted. It was found that the average temperature that can be achieved in the bottom-most surface near the weld line was more than 2400 K, which justifies the penetration. Averages of maximum temperatures on the weld line at different times at the laser spot irradiation were identified near 3000 K.The temperature fluctuation near the weld line was minimal and decreased more in the traverse direction. Scanning with a displaced laser relative to the interface toward the Ti6Al4V side reduces the maximum temperature at the interface and the HAZ of the 316L side. All of these predictions agree well with the experimental results reported in current literature studies. View Full-Text
Keywords: numerical model; dissimilar; time-dependent; laser heat source; thermal properties numerical model; dissimilar; time-dependent; laser heat source; thermal properties
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MDPI and ACS Style

Ghosh, P.S.; Sen, A.; Chattopadhyaya, S.; Sharma, S.; Singh, J.; Dwivedi, S.P.; Saxena, A.; Khan, A.M.; Pimenov, D.Y.; Giasin, K. Prediction of Transient Temperature Distributions for Laser Welding of Dissimilar Metals. Appl. Sci. 2021, 11, 5829. https://doi.org/10.3390/app11135829

AMA Style

Ghosh PS, Sen A, Chattopadhyaya S, Sharma S, Singh J, Dwivedi SP, Saxena A, Khan AM, Pimenov DY, Giasin K. Prediction of Transient Temperature Distributions for Laser Welding of Dissimilar Metals. Applied Sciences. 2021; 11(13):5829. https://doi.org/10.3390/app11135829

Chicago/Turabian Style

Ghosh, Partha S., Abhishek Sen, Somnath Chattopadhyaya, Shubham Sharma, Jujhar Singh, Shashi P. Dwivedi, Ambuj Saxena, Aqib M. Khan, Danil Y. Pimenov, and Khaled Giasin. 2021. "Prediction of Transient Temperature Distributions for Laser Welding of Dissimilar Metals" Applied Sciences 11, no. 13: 5829. https://doi.org/10.3390/app11135829

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