Multicomponent Aging Al-Li-Based Alloys of the Latest Generation: Structural and Phase Transformations, Treatments, Properties, and Future Prospects

Autor: Dmitriy Y. Rasposienko, Larisa I. Kaigorodova, Vladimir G. Pushin, Yurii M. Ustugov
Jazyk: angličtina
Rok vydání: 2022
Předmět:
ALUMINUM ALLOYS
PHASE TRANSITIONS
ULTRAFINE-GRAINED (UFG)
STRUCTURAL PROPERTIES
NANOCRYSTALLINE (NC) STRUCTURE
ALUMINUM LITHIUM ALLOY
AGING
PLASTIC DEFORMATION
TORSIONAL STRESS
ULTRA-FINE GRAINED ( UFG)
General Materials Science
HEAT TREATMENT
PHASES TRANSFORMATION
HIGH PRESSURE TORSION (HPT)
BINARY ALLOYS
HEAT TREATMENT (HT)
PHASE TRANSFORMATION
aluminum lithium alloys (Al-Li)
severe (mega) plastic deformation (SPD)
high pressure torsion (HPT)
heat treatment (HT)
aging
ultrafine-grained (UFG)
nanocrystalline (NC) structure
phase transformation
mechanical properties
ULTRAFINE-GRAINED
LITHIUM ALLOYS
THERMOMECHANICAL TREATMENT
SEVERE (MEGA) PLASTIC DEFORMATION (SPD)
ALUMINUM LITHIUM ALLOYS (AL-LI)
NANOCRYSTALS
NANO-CRYSTALLINE STRUCTURES
NANOCRYSTALLINE STRUCTURES
HIGH PRESSURE TORSION
HIGH PRESSURE TORSIONS
ALUMINIUM-LITHIUM ALLOYS
MECHANICAL PROPERTIES
Zdroj: Materials; Volume 15; Issue 12; Pages: 4190
Materials
ISSN: 1996-1944
DOI: 10.3390/ma15124190
Popis: An overview of modern material science problems is presented for ultralightweight highmodulus 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. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This work was performed within the framework of state task 122021000033-2 “Structure”.
Databáze: OpenAIRE
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