Subsolidus phase equilibria in the Ni–Mn–Ga–Sb and Ni–Mn–In–Sb systems

The analysis of phase equilibria in the Ni–Mn–Ga–Sb and Ni–Mn–In–Sb systems in the absence of melt is carried out. The method of topological modeling based on the concentration diagrams of the ternary systems Ni–Mn–Sb, Ni–Mn–Ga, Ni–Mn–In, Ni–Ga–Sb, Ni–In–Sb, Mn–Ga–Sb, Mn–In–Sb and fragmentary experimental data on phase equilibria involving the Heusler intermetallics Ni2Mn1+x(Ga,Sb)1–x and Ni2Mn1+x(In,Sb)1–x are constructed isobaric-isothermal subsolidus concentration diagrams of the quaternary systems Ni–Mn–Ga–Sb and Ni–Mn–In–Sb. Their main differences are shown.