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Prediction of grain growth behavior in haz during gas tungsten arc welding of 304 stainless steel

Jamshidi Aval, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1007/s11665-009-9380-3
  3. Publisher: Springer US : 2009
  4. Abstract:
  5. In this study, the thermal cycles and the grain structure in the weld heat-affected zone (HAZ) are predicted. At the first stage, a combined heat transfer and fluid flow model is employed to assess the temperature fields during and after welding of 304 stainless steel and then, the evolution of grain structure is conducted using the predicted temperature distribution and an analytical model of grain growth. The grain sizes of the CGHAZ (coarse grain heat affected zone) achieved from the model are basically in agreement with those obtained from experimental measurement under different heat inputs in the range of 0.33-1.07 MJ/m. Both the experimental data and the calculated results show that the average grain size near the fusion plane is about two to four times larger than the average grain size in the base plate depending on the applied heat input
  6. Keywords:
  7. 304 stainless steel alloy ; 304 stainless steel ; Analytical model ; Average grain size ; Base plates ; Coarse grain heat affected zone ; Combined heat transfer ; Evolution of grain ; Experimental data ; Experimental measurements ; Gas tungsten arc welding ; Grain growth behavior ; Grain size ; Grain structures ; Heat input ; Mathematical modelling ; Temperature field ; Thermal cycle ; Weld heat-affected zone ; Cavity resonators ; Computer simulation ; Crystal microstructure ; Electric welding ; Flow of fluids ; Gas metal arc welding ; Grain size and shape ; Heat affected zone ; Mathematical models ; Stainless steel ; Tungsten ; Grain growth
  8. Source: Journal of Materials Engineering and Performance ; Volume 18, Issue 9 , 2009 , Pages 1193-1200 ; 10599495 (ISSN)
  9. URL: https://link.springer.com/article/10.1007%2Fs11665-009-9380-3