A quarternary R-phase in the Fe-Al-Mn-Mo system

摘要

A quaternary R-phase containing about Fe-8Al-13Mn-33Mo (at percent) was found to be stable at 1000 deg C. It was recognized that the element which stabilized this quaternary R-phase at 1000 deg C was manganese, instead of aluminium. Hexagonal cell: a= 11.05 A, c= 19.57 A; equivalent rhombohedral cell: a = 9.125 A, alpha = 74.53 deg.