SICP - بررسي رسوب سختي چندسازه يي هاي آلومينيوم

THE STUDY OF PRECIPITATION HANDENING OF AN ALUMINIUM - SiCP COMPOSITE

It is now well established that precipitation kinetics in MMC on age hardenable aluminium alloys are different from those of the unreinforced matrix and that the precipiatation of semi coherent phases is accelerated by the presence of the reinforcement. An experimental method is described to follow the evolution of the precipitation phenomena in the metal-matrix composites. The influence of the reinforcement on the precipitation kinetics is studied for the case of an aluminium 6061 - SiC, composites. The precipitation kinetics are accerelated in the case of reinforced composite with respect to the unreinforced matrix. The aging temperature are 175°C (Beta" phase range) and 250°C (Betaʹ phase range).