Abstract
The isothermal sections of the Mg-Al-Ca ternary system at 773 and 673 K were determined by phase analysis with electron-probe microanalysis (EPMA) and transmission electron microscopy (TEM). The C36 phase exists between the C14 (Mg2Ca) and C15 (Al2Ca) phases, and its stoichiometry is close to Mg2Al4Ca3. The α-Mg phase equilibrates with the C14 and C36 phases at 773 K, but with C14, C15, and β phases at 673 K, due to the decomposition of the C36 phase into C14 and C15 phases. These intermetallic phases have significant solid-solubility in the ternary system.
Published Version
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