Effects of solidification and melt treatment on microstructure and mechanical properties of cast ZA27 alloy

来源期刊：中国有色金属学报2001年第z1期

论文作者：马颖 陈体军 郝远 张德良

文章页码：63 - 67

Key words：zinc aluminum alloy； porosity； mechanical properties； solidification； microstructure

Abstract: The effects of solidification rate, modifications and pouring temperature on the microstructure and mechanical properties of casting zinc aluminum alloy ZA27 have been investigated. The results show that the number and distribution of pores are the key factors affecting the mechanical properties of ZA27. A slow solidification rate is beneficial to the ductility, while a rapid solidification rate improves the tensile strength of alloy basically. Among the modification agents RE, Sb Te, Sb Te RE and Sb Te Ti B, the addition of Sb Te to melt results in the best modified microstructure. The optimum pouring temperature for ZA27 is approximately 550 ℃.