按热力学计算得到的Al5Cu4Zn的化学计量比成分,可以获得由室温至400℃均为稳态单相的三元化合物T'相合金.利用扫描电镜、电子探针和X射线衍射实验确定了Al-Zn-Cu系在室温下存在稳态Al+Zn+T'三相区,而不存在稳态的Al+Zn+CuZn4三相区.明确了CuZn4是一种亚稳化合物,最终将转变为T'相.确定了Al-Zn-Cu系室温下存在稳态的T'+CuZn4两相区.
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