HEAT TRANSFER AND FLUID FLOW IN LASER MELTED WELD POOLS.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Citations (Scopus)

Abstract

A mathematical model was developed for the calculation of heat transfer and fluid flow in laser melted pools. Appropriate equations of change were solved numerically to obtain insight into the significance of various welding parameters. Furthermore, the model was used to examine the role of sulfur in determining the pool shape during laser welding. The weld pool temperature obtained from vapor composition was in reasonable agreement with the predicted temperature values. From the analysis of the numerically predicted flow fields it was demonstrated that the heat transfer from the laser beam to the base metal via the molten weld pool was significantly improved by the presence of an appropriate surface active agent. Critical experiments were designed and conducted to determine the weld pool shapes with samples of pure iron and iron doped with sulfur. The pool shapes predicted by the model were found to be in good agreement with those obtained experimentally.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
EditorsS.A. David
PublisherASM Int
Pages29-33
Number of pages5
ISBN (Print)0871702452
StatePublished - Dec 1 1986

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Flow of fluids
Welds
Heat transfer
Lasers
Sulfur
Iron
Laser beam welding
Laser beams
Molten materials
Flow fields
Welding
Surface active agents
Vapors
Mathematical models
Temperature
Metals
Chemical analysis
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Paul, A., & Debroy, T. (1986). HEAT TRANSFER AND FLUID FLOW IN LASER MELTED WELD POOLS. In S. A. David (Ed.), Unknown Host Publication Title (pp. 29-33). ASM Int.
Paul, A. ; Debroy, Tarasankar. / HEAT TRANSFER AND FLUID FLOW IN LASER MELTED WELD POOLS. Unknown Host Publication Title. editor / S.A. David. ASM Int, 1986. pp. 29-33
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Paul, A & Debroy, T 1986, HEAT TRANSFER AND FLUID FLOW IN LASER MELTED WELD POOLS. in SA David (ed.), Unknown Host Publication Title. ASM Int, pp. 29-33.

HEAT TRANSFER AND FLUID FLOW IN LASER MELTED WELD POOLS. / Paul, A.; Debroy, Tarasankar.

Unknown Host Publication Title. ed. / S.A. David. ASM Int, 1986. p. 29-33.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - A mathematical model was developed for the calculation of heat transfer and fluid flow in laser melted pools. Appropriate equations of change were solved numerically to obtain insight into the significance of various welding parameters. Furthermore, the model was used to examine the role of sulfur in determining the pool shape during laser welding. The weld pool temperature obtained from vapor composition was in reasonable agreement with the predicted temperature values. From the analysis of the numerically predicted flow fields it was demonstrated that the heat transfer from the laser beam to the base metal via the molten weld pool was significantly improved by the presence of an appropriate surface active agent. Critical experiments were designed and conducted to determine the weld pool shapes with samples of pure iron and iron doped with sulfur. The pool shapes predicted by the model were found to be in good agreement with those obtained experimentally.

AB - A mathematical model was developed for the calculation of heat transfer and fluid flow in laser melted pools. Appropriate equations of change were solved numerically to obtain insight into the significance of various welding parameters. Furthermore, the model was used to examine the role of sulfur in determining the pool shape during laser welding. The weld pool temperature obtained from vapor composition was in reasonable agreement with the predicted temperature values. From the analysis of the numerically predicted flow fields it was demonstrated that the heat transfer from the laser beam to the base metal via the molten weld pool was significantly improved by the presence of an appropriate surface active agent. Critical experiments were designed and conducted to determine the weld pool shapes with samples of pure iron and iron doped with sulfur. The pool shapes predicted by the model were found to be in good agreement with those obtained experimentally.

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Paul A, Debroy T. HEAT TRANSFER AND FLUID FLOW IN LASER MELTED WELD POOLS. In David SA, editor, Unknown Host Publication Title. ASM Int. 1986. p. 29-33