The effects of non-equilibrium processing in the development of copper alloys

摘要: Abstract Two non-equilibrium processes, rapid solidification (RS) and mechanical alloying (MA), have been used to synthesize control highly refined microstructures in liquid immiscible metal systems limited solubility at high volume fractions of the constituent. Studies AlIn, CuCr, CuW CuPbSn microcomposites suggest that they possess technologically important physical properties notable thermal stability when gross chemical segregation occurs during conventional processing can be avoided. The effects RS MA on several copper alloy are presented. concept phase redistribution (PRP) is also discussed. PRP sequential application achieve substantial microstructural refinement phases displaying or coarse localized precipitation dispersions. effectiveness demonstrated by its a automotive bearing alloy. examples presented this paper wide applicability RS, previously intractable create useful new alloys forms alloys.