Weld pool development during GTA and laser beam welding of type 304 stainless steel Part II. Experimental correlation

T. Zacharia, S. A. David, J. M. Vitek, Tarasankar Debroy

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

In Part I of this paper, the results of the heat flow and the fluid flow analysis are presented. Here, in Part II of the paper, predictions of the computational model are verified by comparing the numerically predicted and experimentally observed fusion zone size and shape. Stationary gas tungsten arc and laser beam welds were made on Type 304 stainless steel for different times to provide a variety of solidification conditions such as cooling rate and temperature gradient. Calculated temperatures and cooling rates are correlated with the experimentally observed fusion zone structure. In addition, the effect of sulfur on GTA weld penetration was quantitatively evaluated by considering two heats of 304 stainless steel containing 90 and 240 ppm sulfur. Sulfur, as expected, increased the depth/width ratio by altering the surface tension gradient driven flow in the weld pool.

Original languageEnglish (US)
JournalWelding Journal
Volume68
Issue number12
StatePublished - Dec 1989

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Laser beam welding
Stainless Steel
Sulfur
Welds
Stainless steel
Fusion reactions
Cooling
Tungsten
Thermal gradients
Laser beams
Surface tension
Solidification
Flow of fluids
Gases
Heat transfer
Temperature

All Science Journal Classification (ASJC) codes

  • Metals and Alloys

Cite this

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Weld pool development during GTA and laser beam welding of type 304 stainless steel Part II. Experimental correlation. / Zacharia, T.; David, S. A.; Vitek, J. M.; Debroy, Tarasankar.

In: Welding Journal, Vol. 68, No. 12, 12.1989.

Research output: Contribution to journalArticle

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