Dezincification in cast and heat-treated alpha-beta brass samples

Abstract Two α-β brass alloys with varying Zn contents have been studied. The samples received for examination were heat-treated at 500 °C in order to conduct dezincification studies according EN ISO 6509-1 and measure the depth of from metallographic sections. According phase diagram, α-phase content should increase as a result heat-treatment °C. This phenomenon, however, is difficult observe sections which prepared heattreated samples. When analyzing dezincification, it was found that reduced occurred plausible since β attacked by preferential corrosion. Not only uniform layer observed alloy higher content, but also onset plug dezincification. associated original microstructure characterized coarse primary grain size. In this alloy, clearly larger areas containing alpha will impede process