INVESTIGATION OF THE Mg-RICH PORTION OF THE Mg-In-Ce TERNARY SYSTEM

摘要

The liquidus surface in the ternary Mg-In-Ce system was studied in the composition range 1 to 3% In and 0.5 to 1.5% Ce. Thermal analysis was used to determine the liquidus points in order to construct polythermal sections of the ternary phase diagram. Metallography and x-ray techniques were used to examine phases present at the compositions studied. A triple point presumed to represent a peritectic was discovered at 580℃. Two new phases which may be unknown intermetallic compounds were found. Trace Si present in the alloys was found to concentrate in the intermetallic compounds.