Ly. Wei et al., SOLIDIFICATION BEHAVIOR AND PHASE CONSTITUENTS OF CAST MG-ZN-MISCH METAL-ALLOYS, Journal of Materials Science, 32(12), 1997, pp. 3335-3340
The solidification path and phase constituents of alloys in the magnes
ium-rich corner of the Mg-Zn-misch metal (MM) pseudo-ternary system ha
ve been investigated by a combination of differential thermal analysis
, analytical electron microscopy and X-ray diffraction. The solidifica
tion behaviour diagram for this system was found to be dominated by a
large two-phase (alpha-Mg plus T-phase) field in which the lowest eute
ctic temperature was similar to 500 degrees C. T-phase has a c-centred
orthorhombic crystal structure and exhibits a wide range of stoichiom
etry. The interdendritic eutectic phase in the pseudo-binary Mg-MM sys
tem is Mg12MM which has the same bet structure as Mg12Ce. The eutectic
temperature here is 593 degrees C.