Theoretical description of laser melt pool dynamics, Task order number B239634, Quarter 3 report

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Description

Melting of solid matter under laser radiation is realized in almost every process of laser technology. The present paper addresses melted material flows in cases when melt zones are shallow, i.e., the zone width is appreciably greater than or of the same order as its depth. Such conditions are usually realized when hardening, doping or perforating thin plates or when using none-deep penetration. Melted material flowing under conditions of deep penetration, drilling of deep openings and cutting depends on a number of additional factors (as compared to the shallow-pool case), namely, formation of a vapor and gas cavern in the ... continued below

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38 p.

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Dykhne, A. May 10, 1995.

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Description

Melting of solid matter under laser radiation is realized in almost every process of laser technology. The present paper addresses melted material flows in cases when melt zones are shallow, i.e., the zone width is appreciably greater than or of the same order as its depth. Such conditions are usually realized when hardening, doping or perforating thin plates or when using none-deep penetration. Melted material flowing under conditions of deep penetration, drilling of deep openings and cutting depends on a number of additional factors (as compared to the shallow-pool case), namely, formation of a vapor and gas cavern in the sample and propagation of the laser beam through the cavern. These extra circumstances complicate hydrodynamic consideration of the liquid bath and will be addressed is the paper to follow.

Physical Description

38 p.

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OSTI as DE95017254

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  • Other Information: PBD: 10 May 1995

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  • Other: DE95017254
  • Report No.: UCRL-CR--121458
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/105048 | External Link
  • Office of Scientific & Technical Information Report Number: 105048
  • Archival Resource Key: ark:/67531/metadc627277

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Office of Scientific & Technical Information Technical Reports

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  • May 10, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 23, 2016, 12:39 p.m.

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Dykhne, A. Theoretical description of laser melt pool dynamics, Task order number B239634, Quarter 3 report, report, May 10, 1995; California. (digital.library.unt.edu/ark:/67531/metadc627277/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.