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Effects of Aging Treatment on Microstructure and Properties of Al-Zn-Mg-Cu Extruded Bar
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Jingjing GAO1, Xujian LI1, Jianjian FU1, Yubao ZHOU1, Yong MA1, Qingmei HUANG2, Xianwen YANG2, Lingying YE2
Mining and Metallurgical Engineering | 2024, 44(1) : 147 - 151
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Mining and Metallurgical Engineering | 2024, 44(1): 147-151
• MATERIALS •
Effects of Aging Treatment on Microstructure and Properties of Al-Zn-Mg-Cu Extruded Bar
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Jingjing GAO1, Xujian LI1, Jianjian FU1, Yubao ZHOU1, Yong MA1, Qingmei HUANG2, Xianwen YANG2, Lingying YE2
Affiliations
  • 1.Henan Key Laboratory of Fastening Connection Technology, Xinyang 464000, Henan, China
  • 2.School of Material Science and Engineering, Central South University, Changsha 410083, Hunan, China
Published: 2024-02-01 doi: 10.3969/j.issn.0253-6099.2024.01.032
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The effects of aging treatment on the microstructure and properties of Al-Zn-Mg-Cu extruded bars were investigated. The results show that the alloys treated by two-stage aging and re-aging (TSR), retroregression and re-aging (RRA), and non-isothermal aging (NIA), compared to the treatment with T73, all present better intergranular corrosion (IGC) resistance, with the maximum corrosion depth down from 70 μm to 19, 48, and 30 μm, respectively. Compared to those treated by RRA and NIA, the TSR-treated alloy has the similar tensile strength and yield strength, but obviously superior IGC. After the treatment of T73, TSR, RRA, and NIA, the alloy has its grain boundary precipitates with average size of 27.7, 39.2, 31.6, and 25.5 nm, respectively, and matrix precipitates with average size of 8.1, 10.2, 10.9, and 11.0 nm, respectively.

Al-Zn-Mg-Cu  /  extruded bar  /  aging treatment  /  two-stage aging and re-aging (TSR)  /  retroregression and reaging (RRA)  /  non-isothermal aging (NIA)  /  microstructure  /  mechanical properties  /  corrosion resistance performance
Jingjing GAO, Xujian LI, Jianjian FU, Yubao ZHOU, Yong MA, Qingmei HUANG, Xianwen YANG, Lingying YE. Effects of Aging Treatment on Microstructure and Properties of Al-Zn-Mg-Cu Extruded Bar[J]. Mining and Metallurgical Engineering, 2024 , 44 (1) : 147 -151 . DOI: 10.3969/j.issn.0253-6099.2024.01.032
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Year 2024 volume 44 Issue 1
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Article Info
doi: 10.3969/j.issn.0253-6099.2024.01.032
  • Receive Date：2023-08-26
  • Online Date：2026-03-20
  • Published：2024-02-01
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  • Received：2023-08-26
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Affiliations
    1.Henan Key Laboratory of Fastening Connection Technology, Xinyang 464000, Henan, China
    2.School of Material Science and Engineering, Central South University, Changsha 410083, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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