Evaluation of Ti addition and cooling rate effects on the microstructure and tensile properties of A1-4%Cu-3%Si alloy

This work carried out to investigate the effect of different amounts of Ti (0.01, 0.05, 0.1 and 0.5) and cooling rate on Al-4%Cu-3%Si alloy. The samples were examined by using optical microscopy (OM) and tensile testing to evaluate the modification efficiency of the alloy with different Ti contents. The optimum level Ti as Al–5Ti–1B grain refiners was found. Decreases grain size and dendrite arm spacing due to increasing cooling rate and Ti grain refiner through reduced sections. Increasing cooling rate results in higher strength and Ti-refined specimens showed highest tensile strength and elongation values

کلیدواژه ها:

Aluminium alloys ، Casting ، Grain refinement