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在当前的新型航天、航空材料研究中,Al-Li 合金以其高比模、低比重性能,异军突起,引起人们的极大兴趣。从七十年代末 Al-Li 合金的研究在改善脆性方面取得突破以来,迄今已取得相当的进展。但与传统 Al 合金相比,在塑性和韧性上仍有一定差距。本文着眼于和塑性、韧性密切相关的断裂过程与再结晶的相互关系来研究其断裂规律。
In the current new aerospace, aviation materials research, Al-Li alloy with its high specific gravity, low specific gravity, sudden emergence, aroused great interest. Already considerable progress has been made so far since breakthroughs in the improvement of brittleness have been made in the research of Al-Li alloys in the late seventies. However, compared with the traditional Al alloy, there is still a certain gap between plasticity and toughness. This paper focuses on the plasticity, toughness and fracture process closely related to the recrystallization of the relationship between the study of its rupture law.