Influence of laser-induced capillary waves on heat and mass transfer in the arc-augmented laser processing of metals

Andrey Valentinov Levin; Alexandre E. Zaikin; Alexei L. Petrov

doi:10.1117/12.205013

3 March 1995 Influence of laser-induced capillary waves on heat and mass transfer in the arc-augmented laser processing of metals

Andrey Valentinov Levin, Alexandre E. Zaikin, Alexei L. Petrov

Author Affiliations +

Proceedings Volume 2374, Novel Applications of Lasers and Pulsed Power; (1995) https://doi.org/10.1117/12.205013
Event: Photonics West '95, 1995, San Jose, CA, United States

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.

Citation Download Citation

Andrey Valentinov Levin, Alexandre E. Zaikin, and Alexei L. Petrov "Influence of laser-induced capillary waves on heat and mass transfer in the arc-augmented laser processing of metals", Proc. SPIE 2374, Novel Applications of Lasers and Pulsed Power, (3 March 1995); https://doi.org/10.1117/12.205013

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