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International Journal of Iron & Steel Society of Iran
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Volume Volume 14 (2017)
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Valaee, M., Sheikhi, M., Mazaheri, Y., Usefifar, G. (2017). Resistance Spot Welding of Steels: Modeling and Simulation. International Journal of Iron & Steel Society of Iran, 14(1), 10-16.
M. Valaee; Mohsen Sheikhi; Y. Mazaheri; G.R. Usefifar. "Resistance Spot Welding of Steels: Modeling and Simulation". International Journal of Iron & Steel Society of Iran, 14, 1, 2017, 10-16.
Valaee, M., Sheikhi, M., Mazaheri, Y., Usefifar, G. (2017). 'Resistance Spot Welding of Steels: Modeling and Simulation', International Journal of Iron & Steel Society of Iran, 14(1), pp. 10-16.
Valaee, M., Sheikhi, M., Mazaheri, Y., Usefifar, G. Resistance Spot Welding of Steels: Modeling and Simulation. International Journal of Iron & Steel Society of Iran, 2017; 14(1): 10-16.

Resistance Spot Welding of Steels: Modeling and Simulation

Article 2, Volume 14, Issue 1, Summer and Autumn 2017, Page 10-16  XML PDF (404 K)
Document Type: Research Paper
Authors
M. Valaee1; Mohsen Sheikhi 2; Y. Mazaheri1; G.R. Usefifar1
1Department of Materials Engineering, Bu-Ali Sina University, Hamedan, Iran
2Bu-Ali Sina University
Abstract
Resistance spot welding (RSW) includes many variables that can influence the weld properties. The purpose of this study is to develop an analytical model for prediction of thermal history and weld microstructure in RSW and to find the most important process parameters that influence the weld microstructure. A one dimensional model is proposed for prediction about thermal history during cooling step of RSW process. The reliability of analytical model is evaluated by experiments and numerical simulations. The calculations reveal that the current analytical model is reliable particularly at the temperatures lower than Tm/2. Sheet surface temperature at electrode-sheet interface and sheet thickness are recognized as the most important factors affecting the cooling rate at T<Tm/2. Austenite decomposition is one of the most important transformations in steels that occurs in this temperature interval. Finally an easy to use map also is developed based upon the present analytical model for prediction of weld microstructure.
 
Keywords
Resistance welding; Simulation; Modeling; Weld microstructure; Cooling rate
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