Accession Number : AD0778698

Title :   The Effect of a Q-Switched Laser Pulse on Steel (Vozdeistvie Impulsa Lazera s Modulirovannoi Dobrotnostyu na Stal),

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Kaporskii,L. N. ; Kokora,A. N. ; Romanenkova,G. A. ; Uglov,A. A.

Report Date : 10 APR 1974

Pagination or Media Count : 13

Abstract : Experimental data are presented for the effect of a Q-switched laser pulse on steel in vacuum and in air. Metallographic analysis of the affected region is performed. Upon the application of a pulse to Fe foil, destruction of the material occurs along the grain boundaries. The microhardness of steels in the affected region differs substantially from that of the base material (by a factor of 2). Analysis of the results shows that, along with the gas-dynamic displacement of the material for a pulse duration of approximately 10 to the -7th power sec, heating effects also play a role. It may be assumed that within the damaged zone, effects are generated which are similar to the detonation of an explosive at the surface of a solid. (Modified author abstract)

Descriptors :   *Steel, *Radiation effects, Microstructure, Hardness, Laser hazards, Q switching, Vaporization, Grain boundaries, Translations, USSR

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE