Alloy and a method of preparing the same
A novel medium entropy alloy having the chemical formula Mo x CrNiCo (atomic %) where (x ranges from ˜0.4 to ˜1.0).
1. An alloy of Mo 0.6 CrNiCo characterized in having a dual phase consisting of a face centered cubic (fcc) phase and a sigma phase, wherein
the sigma phase is the minority phase volumetrically and the fcc phase is the majority phase volumetrically; and
the sigma phase forms a network around parcels of the fcc phase.
2. A method of preparing the alloy of claim 1 , comprising:
arc melting molybdenum, chromium, nickel, and cobalt into a molten alloy;
heating the molten alloy to a temperature between 750 degrees Celsius and 1350 degrees Celsius to precipitate the dual phase; and
quick quenching the molten alloy from above 750 degrees Celsius.