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Proceedings Paper

Microstructure behavior of some cast aluminum alloys as a result of double and multipass laser treatment
Author(s): Maxim L. Seleznev; Sergei U. Denisov; Ilya B. Afanasiev; Aleksei U. Privivkov
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Paper Abstract

Laser treatment of aluminum alloys usually consists of surface remelting and alloying. Treatment including dissolution process is considered to be practically impossible because of the very short beam/alloy interaction time. It is demonstrated herein that eutectic dissolution in Al-Cu alloys is possible using double or multipass laser treatment. The structure of the heat affected zone (HAZ) was found to consist of fine spheroidized (alpha) + (theta) eutectic surrounded by (alpha) -Al solid solution. The copper concentration in (alpha) -Al profile within the HAZ exhibits maximum. The effect of alloy composition and the number of laser passes on HAZ microstructure, copper concentration profile within the zone, and microhardness was established.

Paper Details

Date Published: 1 June 1992
PDF: 10 pages
Proc. SPIE 1627, Solid State Lasers III, (1 June 1992); doi: 10.1117/12.60182
Show Author Affiliations
Maxim L. Seleznev, Bauman Moscow State Technical Univ. (United States)
Sergei U. Denisov, Scientific Research Ctr. for Laser Technology (Russia)
Ilya B. Afanasiev, Bauman Moscow State Technical Univ. (Russia)
Aleksei U. Privivkov, Bauman Moscow State Technical Univ. (Russia)

Published in SPIE Proceedings Vol. 1627:
Solid State Lasers III
Gregory J. Quarles, Editor(s)

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