Experimental and computational investigation of fusion zone geometries during autogenous keyhole mode laser welds

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

Abstract

Here we report experimental and numerical modeling efforts targeted at autogenous keyhole mode laser welding of a low-carbon steel (A131 grade EH-36). In order to quantitatively understand the heat transfer and fluid flow processes, a mathematical model involving numerical solution of the equations of conservation of heat, mass and momentum in three dimensions was developed. The model considered formation of a keyhole, liquid steel flow in the weld pool driven by Marangoni convection at the weld pool surface, and heat transfer in the entire weldment. The computed results provide a detailed description of the temperature and velocity fields in the weldment, the shape and size of the keyhole, and the geometry of the fusion zone. There is excellent agreement between the experimental and modelled fusion zones.

Original languageEnglish (US)
Title of host publicationICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics - Congress Proceedings
StatePublished - 2006
EventICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics - Scottsdale, AZ, United States
Duration: Oct 30 2006Nov 2 2006

Other

OtherICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics
CountryUnited States
CityScottsdale, AZ
Period10/30/0611/2/06

Fingerprint

Laser modes
heat transfer
Welds
Fusion reactions
laser
steel
Heat transfer
geometry
Geometry
Laser beam welding
Steel
Low carbon steel
welding
fluid flow
Flow of fluids
Conservation
momentum
Momentum
convection
Mathematical models

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Electrical and Electronic Engineering

Cite this

Rai, R., Kelly, S. M., Martukanitz, R., & Debroy, T. (2006). Experimental and computational investigation of fusion zone geometries during autogenous keyhole mode laser welds. In ICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics - Congress Proceedings [805]
Rai, R. ; Kelly, S. M. ; Martukanitz, Richard ; Debroy, Tarasankar. / Experimental and computational investigation of fusion zone geometries during autogenous keyhole mode laser welds. ICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics - Congress Proceedings. 2006.
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Rai, R, Kelly, SM, Martukanitz, R & Debroy, T 2006, Experimental and computational investigation of fusion zone geometries during autogenous keyhole mode laser welds. in ICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics - Congress Proceedings., 805, ICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics, Scottsdale, AZ, United States, 10/30/06.

Experimental and computational investigation of fusion zone geometries during autogenous keyhole mode laser welds. / Rai, R.; Kelly, S. M.; Martukanitz, Richard; Debroy, Tarasankar.

ICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics - Congress Proceedings. 2006. 805.

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

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AB - Here we report experimental and numerical modeling efforts targeted at autogenous keyhole mode laser welding of a low-carbon steel (A131 grade EH-36). In order to quantitatively understand the heat transfer and fluid flow processes, a mathematical model involving numerical solution of the equations of conservation of heat, mass and momentum in three dimensions was developed. The model considered formation of a keyhole, liquid steel flow in the weld pool driven by Marangoni convection at the weld pool surface, and heat transfer in the entire weldment. The computed results provide a detailed description of the temperature and velocity fields in the weldment, the shape and size of the keyhole, and the geometry of the fusion zone. There is excellent agreement between the experimental and modelled fusion zones.

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M3 - Conference contribution

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Rai R, Kelly SM, Martukanitz R, Debroy T. Experimental and computational investigation of fusion zone geometries during autogenous keyhole mode laser welds. In ICALEO 2006 - 25th International Congress on Applications of Laser and Electro-Optics - Congress Proceedings. 2006. 805