Rasposienko Dmitriy Y, Kaigorodova Larisa I, Pushin Vladimir G, Ustugov Yurii M
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108 Ekaterinburg, Russia.
Department of Metallurgy and Metal Science, Yeltsin Ural Federal University, 620002 Ekaterinburg, Russia.
Materials (Basel). 2022 Jun 13;15(12):4190. doi: 10.3390/ma15124190.
An overview of modern material science problems is presented for ultralightweight high-modulus commercial Al-Li-based alloys in historical retrospect. Numerous particular examples of the Soviet and Russian aviation whose various designs were made of these alloys confirm their successful innovative potential. The key regularities of multicomponent alloying are discussed for the master alloys and modern commercial Al-Li-based alloys of the latest generation; the features typical of their microstructures, phase composition, and properties formed during aging are analyzed. The main mechanisms of phase formation are generalized for standard thermal and thermomechanical treatments. Recent original achievements have been obtained in designing of unique structural and phase transformations in these commercial alloys by means of methods of severe plastic deformations followed by heat treatment and storage. Using the example of three Russian commercial alloys of last generation, the basic principles of creating and controlling an ultrafine-grained structure, the origin and growth of stable nanophases of various types and chemical composition that determine the physicomechanical properties of alloys are established.
通过历史回顾,介绍了超轻高模量商用铝锂基合金的现代材料科学问题概况。苏联和俄罗斯航空领域的众多具体实例表明,各种采用这些合金制造的设计证实了它们成功的创新潜力。讨论了母合金和最新一代现代商用铝锂基合金多组元合金化的关键规律;分析了它们在时效过程中形成的典型微观结构、相组成和性能特征。概括了标准热加工和热机械处理的主要相形成机制。通过严重塑性变形后进行热处理和时效的方法,在这些商用合金独特的结构和相变设计方面取得了最新的原创成果。以上一代三种俄罗斯商用合金为例,确立了创建和控制超细晶粒结构的基本原理,以及决定合金物理力学性能的各种类型和化学成分的稳定纳米相的起源和生长规律。