Micostructural evolution of Al-15(wt.%)Mg with Al-8B grain refiner and cooling rate

This work carried out to investigate the effect of different amounts of B (0.01, 0.03, 0.05, 0.1, 0.3 and 0.5) and cooling rate on Al-15(wt.%)Mg alloy. The samples were examined by using optical microscopy (OM), and XRD to evaluate the modification efficiency of the alloy with different B contents and cooling rates. The optimum level B as Al–8B grain refiners was found. Grain size and dendrite arm spacing decrease due to increasing cooling rate and B grainr efiner through reduced sections .

کلیدواژه ها:

Aluminium alloys ، Casting ، Grain refinement