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Theoretical and experimental study of microstructures and weld pool geometry during GTAW of 304 stainless steel

Jamshidi Aval, H ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1007/s00170-008-1663-6
  3. Publisher: 2009
  4. Abstract:
  5. In this work, temperature field and weld pool geometry during gas tungsten arc welding of 304 stainless steel are predicted by solving the governing equations of heat transfer and fluid flow under quasi-steady state conditions. The model is based on numerical solution of the equations of conservation of mass, momentum, and energy in the weld pool. Weld pool geometry, weld thermal cycles, and various solidification parameters are then calculated by means of the model predictions. The model considers the effects of various process parameters including welding speed and heat input. It is found that the weld pool geometry, predicted by the proposed model, is in reasonable agreement with the corresponding experimentally measured ones. In addition, the solidification behavior of the weld pool can be predicted properly by the model predictions. © 2008 Springer-Verlag London Limited
  6. Keywords:
  7. 304 stainless steel ; Conservation of mass ; Experimental studies ; Gas tungsten arc welding ; Governing equations ; Heat input ; Heat transfer and fluid flow ; Mathematical modelling ; Model prediction ; Numerical solution ; Process parameters ; Quasi-steady state ; Solidification parameter ; Temperature field ; Weld pool ; Weld pool geometry ; Weld thermal cycles ; Welding speed ; Cavity resonators ; Computational geometry ; Computer simulation ; Crystallization ; Electric welding ; Equations of state ; Flow of fluids ; Forecasting ; Gas metal arc welding ; Lakes ; Mathematical models ; Solidification ; Tungsten ; Welds ; Stainless steel
  8. Source: International Journal of Advanced Manufacturing Technology ; Volume 42, Issue 11-12 , 2009 , Pages 1043-1051 ; 02683768 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s00170-008-1663-6