CuCr powder was prepared with ethyl alcohol as process control agent （PCA） by mechanical alloying. Effects of PCA on powder yield

phase constituent

composition and microstructure of the mechanical alloyed powder were investigated. The results show that

with PCA addition

the powder yield and its dispersion are improved with the decrease of wear of abraser and introduction of impurities. However

excessive PCA addition can fade the grain refinement effects

leading to the decrease of solubility increment of Cr in Cu. With the 15% PCA addition

average grain size in the mechanical alloyed CuCr powder with homogeneous composition distribution after milling for 40 hours reaches up to 35 nm

and micro-strain is 0.448%

and the solid solubility of Cr in the Cu makes 1.0139%.