دراسة مقاومة البلى الانزلاقي الجاف لمواد مركبة معدنية ذات أساس من سبيكة الألمنيوم-12 % سيليكون مقواة بدقائق كاربيد السليكون

Abstract EN

In this study, composite materials of an aluminum alloy(Al – 12 % Si) matrix reinforced with 5wt% SiC particles were prepared by gravity die casting and squeeze casting under casting pressure of ( 38MPa) and mold preheating at temperature (200 oC).

Microstructure and hardness for prepared base alloy and composite materials were carried ou.

Dry sliding wear type (pin–on-Disc) with variation in applied load was carried out under a constant steel hardness (35 HRC), sliding speed (2.7 m / sec) and sliding time (20 min).

It has been found that prepared base alloy(Al – 12 % Si) and composite materials produced by squeeze casting have wear resistance better than that of base alloy and composite materials produced by gravity die casting.