Effect of Homogenization Treatment Regime on Microstructure, Recrystallization Behavior, Mechanical Properties, and Superplasticity of Al-Cu-Er-Zr Alloy

Aluminum-based alloys with advanced processing and service properties are required for the automotive and airspace industries. The current study focuses on the microstructure, recrystallization behavior, and elevated- and room-temperatures tensile properties of the novel Al-Cu-Er-Zr-based alloy pret...

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Bibliographic Details
Published in:JOM (1989) 2021-10, Vol.73 (10), p.3092-3101
Main Authors: Amer, S. M., Mikhaylovskaya, A. V., Barkov, R. Yu, Kotov, A. D., Mochugovskiy, A. G., Yakovtseva, O. A., Glavatskikh, M. V., Loginova, I. S., Medvedeva, S. V., Pozdniakov, A. V.
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Aluminum base alloys
Annealing
Chemistry/Food Science
Cold
Copper
Copper base alloys
Crystallization
Earth Sciences
Elongated structure
Engineering
Environment
Fourier transforms
Homogenization
Mechanical properties
Microscopy
Microstructure
Particle size
Physics
Precipitates
Recrystallization
Room temperature
Solid solutions
Strain rate
Superplasticity
Technical Article
Temperature
Tensile properties
Ultimate tensile strength
Weight reduction
Yield stress
Zirconium base alloys
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Summary:Aluminum-based alloys with advanced processing and service properties are required for the automotive and airspace industries. The current study focuses on the microstructure, recrystallization behavior, and elevated- and room-temperatures tensile properties of the novel Al-Cu-Er-Zr-based alloy pretreated using different homogenization annealing regimes. Aluminum solid solution, Al 8 Cu 4 Er phases of crystallization origin, and nanoscale L1 2 -Al 3 (Er,Zr) precipitates were observed in the studied alloy. The alloy exhibited a non-recrystallized structure after annealing of cold-rolled sheets at 300°C, with yield strength of 300 MPa and ultimate tensile strength of 330 MPa at room temperature. The fine-grained structure of the alloy provided superplasticity with elongation to failure up to 450% in the temperature range of 550°C to 605°C and a strain rate range of 10 –3 s –1 to 10 –2 s –1 .
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-021-04766-z