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合金AgAuZn_2具有一个与郝斯勒合金同晶型结构的β″相,这个β″相存在于一个相当广阔的成分范围里。事实上,β″相就是β′有序结构的超结构。伴随着,β″结构的形成晶格发生突然的收缩。关于Ag-Au替换对于原子分布的影响,也作了系统的观察。在Ag-Au替换过程中,Au和Ag的替换或多或少是无规律性的,但Zn原子则仍保持它们的适宜位置,而不受到影响。当成分偏离于理想化学式AgAuZn_2时,有序度的减小不仅仅是由于化学成分的乖异,而且Ag-An替换也产生了一些无序的排列。高温观察的结果指出:Ag多合金的β′-β转变温度随着Au含量的增加而升高,而β相只能在高温度存在。少量的Au大大地提高了由淬炼而得到的β′相的稳定度。但是Au多的合金无论是在室温和高温都是具有β′结构的。
The alloy AgAuZn_2 has a β “phase that is isomorphic to the Hessler alloy and exists in a rather wide range of compositions. In fact, the β ”phase is the superstructure of a β-ordered structure, with the abrupt contraction of the β" structure forming the lattice. On the Ag-Au replacement for atomic distribution, but also made a systematic observation. In the Ag-Au replacement, the Au and Ag substitutions are more or less irregular, but the Zn atoms remain in their proper positions without being affected. When the composition deviates from the ideal chemical formula AgAuZn_2, the degree of ordering decreases not only because of the chemical composition, but also because of the disordered arrangement of Ag-An substitution. The result of high temperature observation shows that the β’-β transition temperature of Ag multi-alloy increases with the increase of Au content, while β phase can only exist at high temperature. A small amount of Au greatly enhances the stability of the β ’phase obtained by quenching. However, the Au alloy has a β ’structure both at room temperature and high temperature.