Effect of non-isothermal retrogression and re-aging treatment on microstructure evolution and mechanical properties of Al-Zn-Mg-Cu alloy

被引：10
作者：
Yang, Wenhao [1 ]
Zhang, Yelin [1 ,2 ]
Yang, Hongfu [1 ]
Zhang, Liu [1 ]
Zheng, Shanju [1 ]
Li, Mengnie [1 ]
机构：
[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Peoples R China
[2] Special Equipment Inspect & Res Inst Yunnan Prov, Kunming 650228, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 31卷
关键词：
Al-Zn-Mg-Cu alloy; Non-isothermal retrogression; Mechanical property; Strengthening mechanism; ALUMINUM-ALLOY; STRENGTHENING MECHANISMS; BEHAVIOR; PRECIPITATION; TEMPERATURE;
D O I：
10.1016/j.jmrt.2024.06.196
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The mechanical properties of rolled 7075 aluminum alloy treated by non-isothermal retrogression and re-aging can exceed the traditional peak aging (T6) and isothermal retrogression and re-aging. After non-isothermal retrogression and re-aging (NIA 180/60) treatment, compared with the T6 state alloy, the alloy has obvious grain boundary precipitate-free zone, and the tensile strength is increased from 558 +/- 1.2 MPa to 611 +/- 1 MPa. The main mechanism leading to the increase of mechanical properties is precipitation strengthening, followed by grain boundary strengthening, which is not related to crystal orientation, dislocation strengthening and solid solution strengthening. During the non-isothermal retrogression and re-aging treatment, the partial dissolution of the existing precipitates (GP zone and eta ' ' phase), the growth of the remaining precipitates and the precipitation of new eta ' ' phase, as well as the secondary precipitation in the re-aging stage, lead to the increase of the size and density of the intragranular precipitates compared with the T6 state alloy, and the maximum precipitation strengthening effect is obtained. This paper also discusses the relationship between performance changes and microstructure, which can provide a reference for optimizing the regression re-aging process.
引用
收藏
页码：1728 / 1743
页数：16
相关论文
共 55 条
[1]   Recent advances in ageing of 7xxx series aluminum alloys: A physical metallurgy perspective [J].
Azarniya, Abolfazl ;
Taheri, Ali Karimi ;
Taheri, Kourosh Karimi .
JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 781 :945-983
[2]   Secondary ageing in an aluminium alloy 7050 [J].
Buha, J. ;
Lumley, R. N. ;
Crosky, A. G. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 492 (1-2) :1-10
[3]   Microstructural Evolution in 7075 Aluminum Alloy during Retrogression Process: Experimental and Phase-Field Modeling [J].
Ebrahimi, Hossein ;
Taheri, Ali Karimi .
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2024, 33 (10) :4898-4910
[4]   Non-isothermal "retrogression and re-ageing'' treatment schedule for AA7055 thick plate [J].
Feng, D. ;
Zhang, X. M. ;
Liu, S. D. ;
Deng, Y. L. .
MATERIALS & DESIGN, 2014, 60 :208-217
[5]   Multiscale analysis of grain boundary microstructure in high strength 7xxx Al alloys [J].
Garner, Alistair ;
Euesden, Ryan ;
Yao, Yichao ;
Aboura, Yasser ;
Zhao, Huan ;
Donoghue, Jack ;
Curioni, Michele ;
Gault, Baptiste ;
Shanthraj, Pratheek ;
Barrett, Zak ;
Engel, Christian ;
Burnett, Tim L. ;
Prangnell, Phil B. .
ACTA MATERIALIA, 2021, 202 :190-210
[6]   The precipitates and properties evolution behaviors of AlZnMgCu alloy during the retrogression process with slow heating [J].
Han, Nianmei ;
Feng, Di ;
Zhang, Xinmin ;
Liu, Shengdan .
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2023, 26 :3544-3557
[7]   Effect of continuous retrogression and re-ageing treatment on mechanical properties, corrosion behavior and microstructure of an Al-Zn-Mg-Cu alloy [J].
He, Benshi ;
Cao, Lingfei ;
Wu, Xiaodong ;
Tang, Songbai ;
Lin, Xiaomin ;
Zou, Yan .
JOURNAL OF ALLOYS AND COMPOUNDS, 2024, 970
[8]   Tailoring precipitation/properties and related mechanisms for a high-strength aluminum alloy plate via low-temperature retrogression and re-aging processes [J].
Hou, L. G. ;
Yu, H. ;
Wang, Y. W. ;
You, L. ;
He, Z. B. ;
Wu, C. M. ;
Eskin, D. G. ;
Katgerman, L. ;
Zhuang, L. Z. ;
Zhang, J. S. .
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2022, 120 :15-35
[9]   Effects of Mg contents on microstructures and corrosion behaviors of homogenization Al-Zn-Mg-Cu alloys [J].
Huang, Rensong ;
Yang, Hongfu ;
Sun, Peng ;
Zheng, Shanju ;
Li, Mengnie ;
Duan, Yonghua .
CORROSION SCIENCE, 2023, 223
[10]   Effect of Homogenization Process on Microstructure of Al-Zn-Mg-Cu Aluminum Alloys [J].
Huang, Rensong ;
Yang, Hongfu ;
Wan, Li ;
Zheng, Shanju ;
Li, Mengnie ;
Koppala, Sivasankar .
ADVANCED ENGINEERING MATERIALS, 2023, 25 (12)
123456