Mir Saman Safavi - MS student Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Gholamreza Marami - Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Ali Rasooli - Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran

In the present investigation, the effect of Al-5Ti-1B grain refiner in powder form with two different powder weight percent, as well as three different melting temperature on ultimate strength of commercially pure Aluminium have been studied. Melt directory done in from end of sample (Directional Solidification). Experimental temperatures selected as follows: 720,760 and 800 0C. A comparative study on ultimate strength of commercially pure aluminium with 0.5% and 2% powder grain refiner was carried out. Results show that to obtain higher ultimate strength value, we should optimize grain refiner amount a melt temperature.

Aluminium, grain refiner, temperature, ultimate strength