3. Production methods

Methods for synthesizing new multi-element or high-entropy alloys must promote the formation of a random solid solution without the presence of other phases such as stable intermetallic compounds. This is a challenging task, as the formation and stability of such alloys with controlled crystal structure and chemical composition are still under debate . The same techniques can be used to produce conventional alloys: high-temperature melting and mechanical processes based on solid-solid reactions. A brief description of these techniques is...