Abstract
Theequilibrium diagram of the Al-Mo (Al side) System is determined as shown in Fig. I. Purity of material employed is given in Table I. As the ordinary thermal analysis was not seemed sensitive enough to determine the liquidus curve and the peritectic temperature, the former was detemined by the chemical analysis of liquid phase which was in coexistence with the primary compounds, and the latter was determined from microstructure of specimens quenched from a supposed range of temperature. Solubility of Mo in solid Al could not be detected by back reflection X-ray analysis nor by the change of hardness after quenching and tempering. Composition of intermetallic compound was estimated by the chemical analysis of insoluble constituents of Al-Mo alloys.
