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在AA5083合金中添加微量的Zr和稀土元素Er,经过半连续铸造、均匀化退火及热轧、冷轧制成板材,利用扫描电镜、透射电镜以及EDX分析发现,Er和Zr可以与Al单独形成Al3Er,Al3Zr相以及复合形成Al3(ZrEr)相,它们与Al基体之间存在共格或半共格关系,可以使合金得到强化。其中Al3(ZrEr)是比Al3Er,Al3Zr尺寸更小、分布更加弥散的强化相,当其直径小于20 nm时与基体保持完全共格,是合金中有效的强化相。
In the AA5083 alloy, a trace amount of Zr and rare earth element Er were added. After semi-continuous casting, homogenization annealing, hot rolling and cold rolling, the plates were made. Using scanning electron microscopy, transmission electron microscopy and EDX analysis, Er and Zr could be formed separately from Al Al3Er, Al3Zr phase and the composite Al3 (ZrEr) phase, which have a coherent or semi-coherent relationship with the Al matrix, can make the alloy be strengthened. Al3 (ZrEr), which is smaller and more dispersed than Al3Er and Al3Zr, is completely coherent with the matrix when its diameter is less than 20 nm, which is an effective strengthening phase in the alloy.