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Proceedings Paper

Influence of laser-induced capillary waves on heat and mass transfer in the arc-augmented laser processing of metals
Author(s): Andrey Valentinov Levin; Alexandre E. Zaikin; Alexei L. Petrov
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Paper Abstract

An experimental study is reported of the influence of capillary waves on heat and mass transfer in molten metal during gas tungsten arc (GTA)- augmented laser processing by cw CO2-laser radiation of q approximately equals 2- 4.5 MW/cm2 intensity. Capillary waves excited on the melt surface by a periodic pulsed reaction of a metal vapor jet had complex dynamics. An analysis of the experimental results indicated a considerable change in heat and mass transfer in the melt when three-dimensional vibrations were excited, compared with the processes that occur at q < 2 MW/cm2. Such changes enhanced the mixing of an alloying elements (compared with the familiar alloying methods) and established the optimal (for surface processing of metals) shape of a molten bath.

Paper Details

Date Published: 3 March 1995
PDF: 7 pages
Proc. SPIE 2374, Novel Applications of Lasers and Pulsed Power, (3 March 1995); doi: 10.1117/12.205013
Show Author Affiliations
Andrey Valentinov Levin, P.N. Lebedev Physical Institute (Russia)
Alexandre E. Zaikin, P.N. Lebedev Physical Institute (Russia)
Alexei L. Petrov, P.N. Lebedev Physical Institute (Russia)

Published in SPIE Proceedings Vol. 2374:
Novel Applications of Lasers and Pulsed Power
Michael W. Prairie; Randy D. Curry, Editor(s)

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