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在Al—Cu—Mg系合金中,等量地加入Fe和Ni,在基体内形成起异相强化作用的FeNAl_9相;此相随着温度的升高,其形态不发生变化,因而能使合金的高温性能提高20～40MPa。
In Al-Cu-Mg alloys, Fe and Ni are added in equal amounts to form FeNAl_9 phase that forms a heterophasic strengthening effect in the matrix. With the increase of temperature, the phase does not change in shape, so that the alloy The high temperature performance increased 20 ~ 40MPa.