Abstract:The thermodynamic treatment, which is based on the difference of heat of formation among three extreme cases for the substitution of a quaternary element X, was applied to predict the substitution behavior of quaternary elements in Ni 3 (Si,Ti). The heat of formation of a hypothetical ternary compound Ni 6 SiTi in which X elements substitute for relevant sites was calculated by using a geometric model based on an extended Miedema's theory. According to the prediction, Cr and W (6), Mn and Re (7), Fe and Os (8)… Show more
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