Research on structure and properties of casting aluminum nickel and cobalt alloy

Structure,chemical component,relationship of phase transformation process and heat treatment,relationship of structure and the best magnetic properties of casting aluminum nickel and cobalt alloy(LNG37and so on)were studied by chemical component analysis,structure and morphology analysis,magnetic property analysis and so on.It was found that magnetic properties(Br,Hc,(BH)max)especially(BH)maxof alloy declined with increase ofα-γphase,concentration of alloy element and heat treatment system were key factors of the best magnetic properties.Alloy should rush through two-phase region(α+γ)when heat treating,well decomposition ofα1+α2 was controlled andγphase was restrained.