A eutectic reaction is a three-phase reaction, by which, on cooling, a liquid transforms into two solid phases at the same time. It is a phase reaction, but a special one. For example: liquid alloy becomes a solid mixture of alpha and beta at a specific temperature (rather than over a temperature range).

What is a eutectic phase and what is its significance?

A eutectic phase consists of a mixture of chemical compounds having the same composition and a single melting point temperature. Metals having such phases are also called easy-melting alloys. The microstructure of eutectic alloys is typically a lamellar structure.

What does eutectic mean?

1 of an alloy or solution : having the lowest melting point possible. 2 : of or relating to a eutectic alloy or solution or its melting or freezing point.