The effects of indium addition to CuAu on the alloy phase transformation behavior were investigated by hardness tests, electrical resistivity measurements, X-ray diffraction and transmission electron microscopy. These established that indium additions lower the critical temperature and stabilize the CuAu II phase at room temperature. Formation of the long period ordered phase produces an age-hardening; although this age-hardening is retarded, the degree of hardening is comparable to that in CuAu. It was noted that the axial ratio increases and the antiphase domain size decreases.

中文翻译：

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CuAu合金中铟添加量对相变行为的影响

通过硬度测试、电阻率测量、X 射线衍射和透射电子显微镜研究了铟添加到 CuAu 中对合金相变行为的影响。这些结果表明，铟的添加降低了临界温度并在室温下稳定了 CuAu II 相。长周期有序相的形成产生时效硬化；虽然这种时效硬化被延缓，但硬化程度与 CuAu 相当。注意到轴比增加并且反相域尺寸减小。