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本文利用电阻法及x射线衍射等分析测试手段。对Zn(27～34wt％)、Al(1～3wt％)余为Cu的合金进行了研究,发现该成分范围内合金的马氏体起始转变点Ms与溶质成分间有如下的线性关系,Ms=1488.35-40.52Zn(wt％)81.41Al(wt％)。结构分析表明:合金马氏体轴比c/a随Zn、Al含量的增加而增加。进一步分析发现,Ms与c/a同时决定于Zn、Al元素原子百分数之和,而且Ms与c/a间存在如下近似关系,Ms≈6849.46-1558.46c/a。因此,马氏体轴比c/a变化也就决定了相变点Ms的变化。
In this paper, resistance and X-ray diffraction analysis methods such as testing. The study on the alloys containing Zn (27-34wt%) and Al (1-3wt%) is Cu. The results show that there is a linear relationship between the martensitic transformation start point Ms and the solute composition in the composition range, Ms = 1488.35-40.52Zn (wt%) 81.41Al (wt%). Structural analysis shows that the martensite axial ratio c / a increases with the increase of Zn and Al contents. Further analysis showed that Ms and c / a are determined by the sum of the atomic percentages of Zn and Al elements, and there is an approximate relationship between Ms and c / a, Ms≈6849.46-1558.46c / a. Therefore, the change of martensite axis ratio c / a also determines the change of phase transition point Ms.