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alloys are potential candidates for high temperature structural applications. Ti and Zr additions strongly enhance the mechanical properties of Fe-Al based alloys by the precipitation of a Laves phase. The quaternary Fe-Al-Zr-Ti system combines the benefits of the precipitation of the Laves phase and reduction in weight due to the aluminium addition. Such alloys are promising candidates for the development of new casting alloys which could be substituted for heavier and more expensive stainless steels. This study aims to enhance the knowledge concerning the solidification of alloys belonging to the iron rich corner of the Fe-Al-Ti-Zr quaternary system. Before studying the solidification process of the quaternary alloys, it is mandatory to know how the corresponding ternary systems behave. Experimental results are presented concerning the equilibria in the iron rich corner of the Fe-Al-Zr and Fe-Ti-Zr systems to determine new data or clarify uncertainties in the literature. These results are then synthesised to help to understand the stable Laves phase structure in quaternary alloys.