Quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees

A quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees was investigated in this study. Three kinds of high strength Al–Zn–Mg–Cu alloys with little strength difference were used for the microstructural characteristic and statistic...

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Main Authors: Ruishuai Gao, Yanan Li, Zhihui Li, Xiwu Li, Kai Wen, Yongan Zhang, Baiqing Xiong
Format: Article
Language:English
Published: Elsevier 2022-05-01
Series:Journal of Materials Research and Technology
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785422006536
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author Ruishuai Gao
Yanan Li
Zhihui Li
Xiwu Li
Kai Wen
Yongan Zhang
Baiqing Xiong
author_facet Ruishuai Gao
Yanan Li
Zhihui Li
Xiwu Li
Kai Wen
Yongan Zhang
Baiqing Xiong
author_sort Ruishuai Gao
collection DOAJ
description A quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees was investigated in this study. Three kinds of high strength Al–Zn–Mg–Cu alloys with little strength difference were used for the microstructural characteristic and statistical analysis. A strength model with high accuracy was established through the systematical calculation of strengthening theories, which was validated by the microstructure and ultimate tensile strength of a testing sample. The model gives the precise ratio of the contribution of precipitation hardening and even the component achieved from the bypass mechanism. Moreover, guidance on the regulation of precipitation phases was proposed from the strength model. It can be disclosed that the alloys will show the best strength when the precipitates of 7xxx series Al alloy are distributed near the right of critical radius, which is identified as 2.5 nm in this model.
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spelling doaj.art-3f4098b5197f488e8b86694e7f78f50b2022-12-22T02:26:04ZengElsevierJournal of Materials Research and Technology2238-78542022-05-011853945405Quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degreesRuishuai Gao0Yanan Li1Zhihui Li2Xiwu Li3Kai Wen4Yongan Zhang5Baiqing Xiong6State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., LTD., Beijing, 100088, China; GRIMAT Engineering Institute Co., LTD., Beijing, 101407, China; General Research Institute for Nonferrous Metals, Beijing, 100088, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., LTD., Beijing, 100088, China; GRIMAT Engineering Institute Co., LTD., Beijing, 101407, China; General Research Institute for Nonferrous Metals, Beijing, 100088, China; Corresponding author.State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., LTD., Beijing, 100088, China; GRIMAT Engineering Institute Co., LTD., Beijing, 101407, China; General Research Institute for Nonferrous Metals, Beijing, 100088, China; Corresponding author.State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., LTD., Beijing, 100088, China; GRIMAT Engineering Institute Co., LTD., Beijing, 101407, China; General Research Institute for Nonferrous Metals, Beijing, 100088, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., LTD., Beijing, 100088, China; GRIMAT Engineering Institute Co., LTD., Beijing, 101407, China; General Research Institute for Nonferrous Metals, Beijing, 100088, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., LTD., Beijing, 100088, China; GRIMAT Engineering Institute Co., LTD., Beijing, 101407, China; General Research Institute for Nonferrous Metals, Beijing, 100088, ChinaState Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., LTD., Beijing, 100088, China; GRIMAT Engineering Institute Co., LTD., Beijing, 101407, China; General Research Institute for Nonferrous Metals, Beijing, 100088, ChinaA quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees was investigated in this study. Three kinds of high strength Al–Zn–Mg–Cu alloys with little strength difference were used for the microstructural characteristic and statistical analysis. A strength model with high accuracy was established through the systematical calculation of strengthening theories, which was validated by the microstructure and ultimate tensile strength of a testing sample. The model gives the precise ratio of the contribution of precipitation hardening and even the component achieved from the bypass mechanism. Moreover, guidance on the regulation of precipitation phases was proposed from the strength model. It can be disclosed that the alloys will show the best strength when the precipitates of 7xxx series Al alloy are distributed near the right of critical radius, which is identified as 2.5 nm in this model.http://www.sciencedirect.com/science/article/pii/S2238785422006536Al–Zn–Mg–Cu alloysAlloying degreeMicrostructural characteristicTensile propertiesStrength model
spellingShingle Ruishuai Gao
Yanan Li
Zhihui Li
Xiwu Li
Kai Wen
Yongan Zhang
Baiqing Xiong
Quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees
Journal of Materials Research and Technology
Al–Zn–Mg–Cu alloys
Alloying degree
Microstructural characteristic
Tensile properties
Strength model
title Quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees
title_full Quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees
title_fullStr Quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees
title_full_unstemmed Quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees
title_short Quantitative relationship between microstructure and tensile properties of Al–Zn–Mg–Cu alloys with various alloying degrees
title_sort quantitative relationship between microstructure and tensile properties of al zn mg cu alloys with various alloying degrees
topic Al–Zn–Mg–Cu alloys
Alloying degree
Microstructural characteristic
Tensile properties
Strength model
url http://www.sciencedirect.com/science/article/pii/S2238785422006536
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