Performance of bimetal materials under the various conditions of laser treatments

Abstract

Bimetals – metal materials consisted of more layers-belong to the group of materials of intensive development. The essence of usage of bimetals lays within the possibility to unite the good qualities of 2 or more components in the new system, whose quality exceeds quality of each component. This paper considers experimental testing on bimetals of special use, especially the ones being used in industry of motor vehicles, as well as the air and the army industry. Fort he production of bimetals, hot-rolleda stell Č.0148 and brass Cu76Zn24Si0.5 have been used. These alloys have been treated with the thermic and thermo-mechanic treatments, and then they have been subjected under the laser treatment, with various dynamic working regimes of lasers (ruby laser, wave length λ= 694.3 x 10-9m, Q-swich). Structural changes, upon applied treatments, have been monitored with optical, transmission and scanning microscopes. Based on microphotography and the results of obtained mechanical characteristics, different terms been defined and they are of great significance in means of obtaining the optimal characteristics of treated alloys.