针对超高强铝合金的特点,从改善合金性能的角度出发,研究了几种均匀化制度。研究发现,两级均匀化优于单级均匀化;400℃短时保温有利于提供合金的综合性能,其原因是促进了Al3Zr粒子的弥散析出,最终细化了亚晶粒所致。研究认为,较好的均匀化制度是400℃/4h+463℃/24h。

In order to improve the properties of the ultra-high strength aluminum alloy, some variable homogenization processes were studied. It is found that the two stage homogenizations are better than those of one stage. The properties are improved through the plateau of 400℃, which is explained that it can accelerate the precipitation of Al 3Zr which finning the sub grains. The excellent homogenization process have been determined:400℃/4h+463℃/24h.