Peculiarities of mechanochemical activation and consolidationof Al-Si-Ni-Fe-C and Al-Cu-Fe powder charges
Hot formed powder composite materials produced from Al-Si-Ni-Fe-C and Al-Cu-Fe powder mixtures mechanochemicallyactivated in saturated aqueous solution of boric acid have been investigated. Granulometric composition of the activated powders was ascertained. Effects of the cold pressing pressure as well as reduced work of hot forming on the relative density of compactedmaterial were studied. Hot formed materials produced from the activated Al-Si-Ni-Fe-C and Al-Cu-Fe powder charges are foundto be more hard than those produced by powder mixing technology. Optimal values of the cold pressing pressure and reduced work of the hot forming are determined which ensure the production of the composite materials with enhanced relative density and hardness.