【摘要】 主要对工业牌号Ｚｎ－Ａｌ合金ＺＡ８，ＺＡ１２和ＺＡ２７进行了组织超塑性研究．发现经过组织细化的ＺＡ８，ＺＡ１２和ＺＡ２７铸造Ｚｎ－Ａｌ合金，在２７０～３３０℃温度区间和８．３×１０－４～１．７×１０－２Ｓ－１初始应变速率（ε０）的试验条件下具有良好的超塑性力学性能，并且在较低的温度条件下也具有一定的超塑性特点．更多还原

【Abstract】 The microstructural superplasticity of cast Zn-Al alloys is investigated using industrial specifications of ZA8,ZA12,and ZA27 as the specific. probes. The experimental resuits indicate that the structurally refined cast Zn-Al alloys ZA8,ZA12 and ZA27 all possess good superplastic properties under experimental condition with temper atute range of 270～330℃ and initial strain rate of 8.3×10-4～1.7×10-2,having still certain superplastic properties even at lower temperature range.更多还原