Effect of Rare Earth Y and Al-5Ti-B refiner co-alloying on the microstructure and mechanical properties of A356 aluminum alloy
The melt of A356 aluminum alloy was treated with Al-20Y denaturant and Al-5Ti-B refiner to study the effects of the com-posite addition of Rare Earth Y and Al-5Ti-B on the microstructure and mechanical properties of A356 aluminum alloy.The results showed that the addition of Rare Earth Y and Al-5Ti-B can improve the nucleation rate,refine the α-Al grain size and change the eu-tectic silicon morphology,and the eutectic silicon morphology change from needle-like and slab-like to short rod-like and granular,which improve the mechanical properties of the cast aluminum alloy.The tensile strength,yield strength and elongation of A356 cast a-luminum alloy with the addition of Rare Earth Y and Al-5Ti-B are 146 MPa,98 MPa and 4.0%,respectively.
NETL
NSTL
万方数据
