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从七十年代初期以来,为了提高结构铝合金材料的强度、弹性模量、韧性、抗腐蚀性能和抗疲劳性能,冶金学家采用铸锭冶金方法(IM)进行了广泛的研究,其结果是通过改变原有合金成分、提高基体金属纯度和应用形变热处理技术,发展了一些新的IM铝合金,例如:2124、2048、7050、7149、7010合金,2324-T39和7150-T651板材,2224-T3511和7150-T6511挤压件等等。它们的综合性能比原有的2×××和7×××铝
Since the early 1970s, metallurgists have conducted extensive studies using the ingot metallurgy method (IM) in order to improve the strength, elastic modulus, toughness, corrosion resistance and fatigue resistance of structural aluminum alloys, with the result that Some new IM aluminum alloys have been developed by changing the composition of the original alloy, increasing the purity of the base metal, and applying the thermomechanical treatment. For example, the alloys 2124, 2048, 7050, 7149, 7010, 2324-T39 and 7150- T3511 and 7150-T6511 extrusion and so on. Their overall performance than the original 2 × × × and 7 × × × aluminum