Finite element modeling of the effect of welding parameters on solidification cracking of Austenitic Stainless Steel 310

  • Eslam Ranjbarnodeh Amirkabir University of Technology
  • Yashar Gheisar Anzabi
  • Hamed Sabet
Keywords: Solidification cracking, Austenitic stainless steel, finite element modeling, Thermal strain, Welding sequence

Abstract

A transient thermo-mechanical model is employed to study the effects of welding parameters on the occurrence of solidification cracking. A finite element program, ANSYS, is employed to solve the thermal and mechanical equations while the different variables such as welding current, speed and sequence are considered in the simulation. The studied geometry was butt joint of two stainless steel plates with the thickness of 2 mm. Then, the samples were welded by TIG method without filler. To verify the numerical results, the model outputs were checked with the experimental observations and good agreement was observed. It was found that the increasing of welding current from 70 A to 100 A resulted in the increase in transverse tensile strain from 1.2 to 2.1 which can facilitate the occurrence of solidification cracking. Furthermore, the application of symmetric welding layout is an effective method to prevent solidification cracking.

References

V. Shankar, T. P. S. Gill, S. L. Mannan, S. Sundanese: Sadhana-Acad P Eng S, 28, (2003) 359–382.

Y. Wei, Z. Dong, R. Liu, Z. Dong, Y. Pan, Hot cracking Phenomena in Welds, First ed , Springer-Verlag, Berlin Heidelberg, 2011, 185-222.

E. Ranjbarnodeh, S. Serajzadeh, A.H.Kokabi, A. Fischer: P I Mech Eng B-J Eng

(2011)117-125.

Z. Dong, Y. Wei, Y. Xu: Comp Mater Sci, 38 (2006), 459–466.

B. Hu, I.M. Richardson: Mater. Sci. Eng., A, 429(2006), 287–294.

]6[S. Kou, Welding Metallurgy, Second ed, Wiley, New Jersey, 2003, 263-268.

T. Belytschko, W.K. Liu, B. Moran, Nonlinear finite element methods for continua and structures, Second ed, Wiley, Chichester, 2000, 104-107.

B. Taljat, B. Radhakrishnan, B. Zacharia: Mater. Sci. Eng., A, 246(1998), 45-54.

W. Zhang, G.G .Roy, J.W .Elmer, T. DebRoy: J Appl Phys, 93 (2003), 3022-3033. View ITEM

Published
2016-12-31
Section
Articles - archived