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Volume 19
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10.3390/ma19010091
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Article

Hot Deformation Behavior of 7085 Aluminum Alloy Based on Constitutive Model, Processing Map, and Microstructure Evolution

by
Wenke Wang
1,
Wenqing Li
1,
Xiaolong Tang
2,
Yuehua Sun
2 and
Jian Ren
2,*
1
HIT (Weihai) Innovation Park Corporation Limited, Weihai 264209, China
2
School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002, China
*
Author to whom correspondence should be addressed.
Materials 2026, 19(1), 91; https://doi.org/10.3390/ma19010091
Submission received: 25 September 2025 / Revised: 17 December 2025 / Accepted: 23 December 2025 / Published: 26 December 2025
(This article belongs to the Section Metals and Alloys)
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Abstract

To understand the hot deformation behavior of 7085 aluminum alloy, compression tests were performed under varied conditions (593–743 K/0.001–1 s−1). While the true stress–strain curves predominantly display the features of dynamic recovery, the softening mechanism shifts towards dynamic recrystallization when deforming at higher temperatures and lower strain rates. The validity of the constructed strain-compensated Zener–Hollomon model is confirmed by its exceptional precision in forecasting the flow stress, achieving an R2 value of 0.992. The instability areas are concentrated in the high-strain-rate regions, and the optimal deformation processing for 7085 aluminum alloy is 693–743 K/0.01–0.001 s−1. The alloy’s softening mechanism undergoes a transition from solely dynamic recovery to a progressively more significant coordinated role of dynamic recovery and dynamic recrystallization as the temperature rises and the strain rate drops.
Keywords: 7085 aluminum alloy; hot compression; processing map; constitutive model 7085 aluminum alloy; hot compression; processing map; constitutive model

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MDPI and ACS Style

Wang, W.; Li, W.; Tang, X.; Sun, Y.; Ren, J. Hot Deformation Behavior of 7085 Aluminum Alloy Based on Constitutive Model, Processing Map, and Microstructure Evolution. Materials 2026, 19, 91. https://doi.org/10.3390/ma19010091

AMA Style

Wang W, Li W, Tang X, Sun Y, Ren J. Hot Deformation Behavior of 7085 Aluminum Alloy Based on Constitutive Model, Processing Map, and Microstructure Evolution. Materials. 2026; 19(1):91. https://doi.org/10.3390/ma19010091

Chicago/Turabian Style

Wang, Wenke, Wenqing Li, Xiaolong Tang, Yuehua Sun, and Jian Ren. 2026. "Hot Deformation Behavior of 7085 Aluminum Alloy Based on Constitutive Model, Processing Map, and Microstructure Evolution" Materials 19, no. 1: 91. https://doi.org/10.3390/ma19010091

APA Style

Wang, W., Li, W., Tang, X., Sun, Y., & Ren, J. (2026). Hot Deformation Behavior of 7085 Aluminum Alloy Based on Constitutive Model, Processing Map, and Microstructure Evolution. Materials, 19(1), 91. https://doi.org/10.3390/ma19010091

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