Abstract：High-entropy alloys were newly developed alloys that were composed,by definition,of at least five principal elements with concentration in the range of 5%-35%(molar fraction).Therefore,the alloying behavior of any given principal element was significantly affected by all the other principal elements presented.The definition,distinguished structure and performance characteristics,as well as the potential applications of high-entropy alloys were introduced.In addition,the historical development and the latest research progress in this field are also summarized.
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