Combinatorial Design of High entropy Alloys
Since the early bronze age, humans have been tuning the properties of materials by adding alloying elements. For example, a few percent by weight of copper was added to silver to produce sterling silver for coinage a thousand years ago, because pure silver was too soft. Examples from the modern era include steels that consist primarily of iron alloyed with carbon and chromium for strength and corrosion resistance, respectively, and copper alloyed with beryllium to make it strong and nonsparking for use in explosive environments. With few exceptions, the basic alloying strategy of adding relatively small amounts of secondary elements to a primary element has remained unchanged over millennia. This means that composition adjustment of metallic alloys has long been used to lend desirable properties to materials. Typically, in classical metallurgical alloys such as steels or Aluminium alloys, it involves the addition of relatively small amounts of secondary elements to a primary element Fe plus C or Al pl
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