Two-dimensional transient temperature distribution within a metal undergoing multiple phase changes caused by laser irradiation at the surface
Abstract
An interesting phenomenon in laser-metal interactions is the influence of a metal plasma above a surface on the impinging laser beam. This 'thermal coupling' phenomenon dramatically increases the metal surface's energy-absorption capacity. Attention is presently given to the sensible heating and phase transformations within the metal, assuming that the laser beam has a spatial variation, and that thermophysical properties are constant. A Gaussian intensity profile is found to result in high spot center temperatures, which decrease rapidly in the radial direction.
- Publication:
-
ASME Journal of Heat Transfer
- Pub Date:
- November 1988
- Bibcode:
- 1988ATJHT.110.1009M
- Keywords:
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- Laser Beams;
- Laser Target Interactions;
- Metal Surfaces;
- Phase Transformations;
- Temperature Distribution;
- Two Dimensional Models;
- Energy Absorption;
- Specific Heat;
- Thermal Conductivity;
- Thermophysical Properties;
- Transient Heating;
- Fluid Mechanics and Heat Transfer