My project is to relate the heat treatment conditions of Al8Co17Cr17Cu8Fe17Ni33 alloy (which is called a “High Entropy Alloy”) with the hardness of it. It is even interesting for me too because these alloys present a new class of materials that present novel phase structures and properties, and it has not much usage area at the moment. So there is a huge world waiting to be discovered.
So, what is this HEA thing?
There is no universally agreed-upon definition of a HEA but the most agreed one is alloys containing at least 5 elements with concentrations between 5 and 35 atomic percent. In addition, later research expanded it to only alloys that form a solid solution with no intermetallic phases should be considered true high-entropy alloys, as the formation of ordered phases decreases the entropy of the system.
HZB-Summer Student 2017
Metallurgical and Materials Engineering Student
Dokuz Eylul University