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Effects of Solution Time on Mechanical Properties and Intergranular Corrosion Resistance of Al-Cu-Mg-Ag Alloy
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Jixiang WANG, Pan MAO, Song BAI, Zhiyi LIU
Mining and Metallurgical Engineering | 2025, 45(1) : 138 - 142
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Mining and Metallurgical Engineering | 2025, 45(1): 138-142
• MATERIALS •
Effects of Solution Time on Mechanical Properties and Intergranular Corrosion Resistance of Al-Cu-Mg-Ag Alloy
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Jixiang WANG, Pan MAO, Song BAI, Zhiyi LIU
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  • School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
Published: 2025-02-01 doi: 10.3969/j.issn.0253-6099.2025.01.026
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The effects of different solid solution time on the mechanical properties, intergranular corrosion (IGC) and microstructure of an Al-Cu-Mg-Ag alloy were investigated by performing tensile testing, IGC tests, and electrochemical corrosion analysis, as well as using transmission electron microscopy, scanning electron microscopy and electron backscatter diffraction techniques. Results show that increasing the solution time from 5 min to 120 min leads to a gradual dissolution of residual second phase and a gradual increase in the size and quantity of Ω phase, contributing to a remarkable improvement in mechanical properties. Meanwhile, the IGC resistance of Al-Cu-Mg-Ag alloy is found to be considerably degraded as solution time is prolonged. The potential difference between the precipitation free zone (PFZ) and the matrix is the decisive factor in accelerating the IGC rate, while the PFZ width has no obvious influence on IGC resistance.

Al-Cu-Mg-Ag alloy  /  solid solution treatment  /  Ω phase  /  precipitation free zone  /  intergranular corrosion  /  residual second phase
Jixiang WANG, Pan MAO, Song BAI, Zhiyi LIU. Effects of Solution Time on Mechanical Properties and Intergranular Corrosion Resistance of Al-Cu-Mg-Ag Alloy[J]. Mining and Metallurgical Engineering, 2025 , 45 (1) : 138 -142 . DOI: 10.3969/j.issn.0253-6099.2025.01.026
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Year 2025 volume 45 Issue 1
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doi: 10.3969/j.issn.0253-6099.2025.01.026
  • Receive Date：2024-08-21
  • Online Date：2026-03-17
  • Published：2025-02-01
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  • Received：2024-08-21
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    School of Materials 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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