Aluminium-Cobalt-Iron

Hari K.C. Kumar, Martin Palm, Maximilian Rank, Alexander Walnsch, Andy Watson

Introduction

Phase relationships in the Al-Co-Fe system are relatively well known in the composition range up to approximately 35 mass% Al. Both the Al-Fe system and the Al-Co systems contain ordered bcc structures of the CsCl-type (α', cP2) and form extensive solid solution ranges between them. At intermediate temperatures, the (αFe) phase (cI2) in the Co-Fe system characterizes the ternary system. The major contribution to the understanding of the liquidus and solidus relationships in the ternary system up to 35 mass% Al is due to [1933Koe, 1936Koe, 1937Koe], who all examined alloys by thermal, metallographic and magnetic methods. [1941Edw] used X-ray measurements to define single and two-phase fields in Co-rich regions of the phase diagram. Alloys were prepared from pure material by induction melting, homogenizing at 13...