The effects of grain refiners with different content on microstructure and mechanical properties of as-cast

hot rolled and cold rolled H65 alloy strip have been investigated. The results indicate that the two kinds of grain refiners can both refine the grain size in as- cast microstructure and improve tensile strength

elongation and electric conductivity of the H65 brass alloy strip. In addition

the refining effects can be evidently remained in hot rolled and cold rolled H65 brass alloy. The tensile strength

elongation and electric conductivity of the cold rolled H65 brass strip with 0.2 mm thick reach 687 MPa

1.94% and 17.6MS/m with 0.075% 2# grain refiner addition

increased by 6.4% and by 6%

by 40.7%

respectively

compared with those of un-refined H65 brass strip.