Structure of the aluminum alloy Al-Cu-Mg cryorolled to different strains

• Published in: Physics of metals and metallography Vol. 116; no. 7; pp. 676 - 683
• Main Authors: Krymskiy, S. V., Avtokratova, E. V., Sitdikov, O. Sh, Mikhaylovskaya, A. V., Markushev, M. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-07-2015; Springer; Springer Nature B.V
• Subjects: Alloys; Aluminum; ALUMINUM ALLOYS (50 TO 99 AL); Aluminum base alloys; Analysis; Chemistry and Materials Science; Diffraction; Diffusion; DISLOCATIONS; Evolution; Formations; Liquid nitrogen; Materials Science; Metallic Materials; METALLOGRAPHY; MICROSTRUCTURES; Nanostructure; Phase Transformations; Specialty metals industry; Structure; X RAYS; microstructure; cryorolling; EBSD analysis; aluminum alloy
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X15050105

Methods of optical metallography, X-ray diffraction, and transmission and scanning electron microscopy were used to study changes in the structure of the aluminum alloy D16 (2024) caused by isothermal rolling at a temperature of liquid nitrogen. It has been established that the basic structural changes that take place in the material upon deformations to
e
∼ 2.0 are due to the formation and evolution of the dislocation structure, which contains cells of nanometer size. With further straining to
e
∼ 3.5, the processes of recovery and recrystallization become activated, which lead to the formation of a mixed grain-subgrain nanosized structure.