TY - BOOK AU - Ahmed Hatem Omar Abdelaziz Elkhoribi AU - Shimaa Elhadad , AU - Waleed Khalifa , TI - Effect of pouring temperature and ultrasonic treatment on the grain size and morphology of Al-4.5% Mg and Al-7% Si Cast Alloys / PY - 2014/// CY - Cairo : PB - Ahmed Hatem Omar Abdelaziz Elkhoribi , KW - Al-cast alloys KW - Pouring Temperature KW - Ultrasonic Treatment N1 - Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Metallurgical Engineering; Issued also as CD N2 - Grain refinement has many beneficial effects on Al-cast alloys, such as increasing fluidity, reducing hot cracking, reducing micro porosity, improving yield strength, and improving fracture toughness. This work was carried out to investigate the effect of pouring temperature on the grain size and morphology of Al-4.5% Mg (JIS-AC7A) and Al-7% Si (JIS-AC4C) cast alloys. In addition, the effect of ultrasonic treatment (UST) was also investigated on the same alloys UR - http://172.23.153.220/th.pdf ER -