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采用加入微量元素锆对ＺＡ２７ 合金进行变质处理，并加热到液－固相区不同温度，采用不同时间进行等温处理，以观察所获得的ＺＡ２７ 合金半固态组织的演变规律。结果表明：经过变质处理后的合金在液－固相区不同温度保温时，具有以下的组织演变规律：树枝晶、碎块状、颗粒状、球状、晶粒长大。
ZA27 alloy was modified with trace element zirconium and heated to different temperatures in the liquid-solid zone. The isothermal treatment was performed at different times to observe the evolution of the semi-solid ZA27 alloy. The results show that the metamorphic alloy has the following microstructure evolution at different temperature in the liquid - solid zone: dendrites, fragments, grains, spheres and grains.