Investigation of deformation behavior and strain-induced precipitations in Al–Zn–Mg–Cu alloys across a wide temperature range

This study explores the hot deformation behavior of Al–Zn–Mg–Cu alloy through uniaxial hot compression (200 °C–450°C) using the Gleeble-1500. True stress–strain curves were corrected, and three models were established: the Arrhenius model, strain compensated (SC) Arrhenius model, and strain compensa...

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Bibliographic Details
Published in:Scientific reports 2024-06, Vol.14 (1), p.14722-22, Article 14722
Main Authors: Zhang, Qingdong, Zuo, Jinrong, Yang, Chen, Xia, Yingxiang, Shu, Xuedao, Mei, Bizhou, Wang, Ying, Cui, Long
Format: Article
Language:English
Subjects:
639/301
639/301/1023
639/301/1023/1026
Accuracy
Alloys
Aluminum alloys
Al–Zn–Mg–Cu alloy
Arrhenius constitutive model
Comparative analysis
Deformation
Electrolytes
Friction
Grain boundaries
Hot deformation
Humanities and Social Sciences
Investigations
Microstructure
multidisciplinary
Neural networks
Science
Science (multidisciplinary)
Software
Strain
Strain-induced precipitation
Stress-strain curves
Temperature
Zinc
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Summary:This study explores the hot deformation behavior of Al–Zn–Mg–Cu alloy through uniaxial hot compression (200 °C–450°C) using the Gleeble-1500. True stress–strain curves were corrected, and three models were established: the Arrhenius model, strain compensated (SC) Arrhenius model, and strain compensated recrystallization temperature (RT) segmentation-based (TS-SC) Arrhenius model. Comparative analysis revealed the limited predictive accuracy of the SC Arrhenius model, with a 25.12% average absolute relative error (AARE), while the TS-SC Arrhenius model exhibited a significantly improved to 9.901% AARE. Material parameter calculations displayed variations across the temperature range. The SC Arrhenius model, utilizing an average slope method for parameter computation, failed to consider temperature-induced disparities, limiting its predictive capability. Hot processing map, utilizing the Murty improved Dynamic Materials Model (DMM), indicated optimal conditions for stable forming of the Al–Zn–Mg–Cu alloy. Microstructural analysis revealed MgZn 2 precipitation induced by hot deformation, with crystallographic defects enhancing nucleation rates and precipitate refinement.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-65669-y