Phase equilibria of the icosahedral Al–Cu–Fe phase

Abstract

The phase equilibria of alloys in the vicinity of icosahedral phase region of the ternary Al–Cu–Fe system were investigated by thermal and magnetothermal analysis, metallographical methods and X-ray diffraction. It was reconfirmed that the icosahedral phase forms by a ternary peritectic reaction as L+ λ+ β⇔ i. Its temperature was found at 882±2 °C. The liquidus projection was established.