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以航空用铝锂合金2090-T83为研究对象,研究了合金化过程中Cu、Zn、Mn、Mg、Zr、In、Cd、Ge、Ag、Ce、La、Y和Sc等元素对合金强度、塑韧性、强化作用、腐蚀性能、焊接性及各向异性的影响及Ag、Mg元素对合金时效硬化的影响。结果表明:Cu、Zr、Ge、Sc、Ce、La和Y元素影响合金强度及塑韧性,Zn、Sc元素影响合金的腐蚀性能,Mn、Ce、La、Y元素影响合金各向异性,Mg、Ag、In、Cd元素影响合金的强化性能,Sc元素影响合金焊接性及热裂纹敏感性,Ag元素对合金时效强化效应很小,Mg元素对时效强化效应较大,Ag和Mg两元素结合对合金时效强化效应很大。
The effects of Cu, Zn, Mn, Mg, Zr, In, Cd, Ge, Ag, Ce, La, Y and Sc on the strength, Plastic toughness, strengthening effect, corrosion resistance, weldability and anisotropy and the effect of Ag and Mg on the age hardening of the alloy. The results show that the elements Cu, Zr, Ge, Sc, Ce, La and Y affect the strength and ductility of the alloy. The Zn and Sc elements affect the corrosion resistance of the alloy. The elements Mn, Ce, La and Y affect the alloy anisotropy, Ag, In, Cd affect the strengthening properties of the alloy, Sc element affects the weldability and thermal susceptibility of the alloy, the effect of Ag on the aging strengthening effect is small, the effect of Mg on aging strengthening, Ag and Mg two elements combined Alloy aging effect is very large.