Journal
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 25, Issue -, Pages 6880-6885Publisher
ELSEVIER
DOI: 10.1016/j.jmrt.2023.07.130
Keywords
Al-Cu-Mg-Ag alloy; Deep cryogenic treatment; c1 phase; Dislocation
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The effect of deep cryogenic treatment (DCT) on the aging behavior and tensile properties of Al-Cu-Mg-Ag alloy was investigated. The results showed that DCT of the alloy induced plastic deformation and high-density dislocations in the a-Al matrix. These dislocations cut second-phase particles, reducing the size of c1 precipitates and increasing their number density, thereby mitigating the adverse effects of DCT on the tensile properties of the alloy.
Effect of deep cryogenic treatment (DCT) on the aging behavior and tensile properties of Al-Cu-Mg-Ag alloy was investigated. Results show that DCT of Al-Cu-Mg-Ag alloy produces plastic deformation of about 0.2% and high-density dislocations in the a-Al matrix. These dislocations cut second-phase particles in under-aged Al-Cu-Mg-Ag alloy, resulting in a decrease in the size of c1 precipitates and an increase in the number density, thereby weakening the adverse effects of DCT on the tensile properties of the alloy.& COPY; 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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