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Effect of Annealing Temperatures on Fatigue Properties of Al-Cu-Mg-Ag Alloys
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Zhiwei LAI, Zhiyi LIU, Song BAI, Guangyu HE
Mining and Metallurgical Engineering | 2025, 45(4) : 192 - 195
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Mining and Metallurgical Engineering | 2025, 45(4): 192-195
• MATERIALS •
Effect of Annealing Temperatures on Fatigue Properties of Al-Cu-Mg-Ag Alloys
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Zhiwei LAI, Zhiyi LIU, Song BAI, Guangyu HE
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  • School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
Published: 2025-08-01 doi: 10.3969/j.issn.0253-6099.2025.04.035
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Effect of annealing temperature on the mechanical properties and fatigue properties of Al-Cu-Mg-Ag alloy was explored by preforming fatigue crack propagation (FCP) rate testing, room-temperature tensile test and using characterization means such as X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that the T4 state specimen annealed at 420 ℃ for 4 h presents higher yield and tensile strength, but poor plasticity. As the annealing temperature increases within the range of 400－430 ℃, the orientation density of the Goss texture in the alloy first increases and then decreases, and the T4 specimen after 4 h annealing at 420 ℃ presents an optimal fatigue performance, with lower FCP rate around 1.34×10－3 mm per cycle at ΔK≈20 MPa·m0.5.

annealing temperature  /  Al-Cu-Mg-Ag  /  Al-Cu-Mg alloy  /  fatigue crack propagation (FCP)  /  texture  /  heat treatment  /  fatigue performance
Zhiwei LAI, Zhiyi LIU, Song BAI, Guangyu HE. Effect of Annealing Temperatures on Fatigue Properties of Al-Cu-Mg-Ag Alloys[J]. Mining and Metallurgical Engineering, 2025 , 45 (4) : 192 -195 . DOI: 10.3969/j.issn.0253-6099.2025.04.035
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doi: 10.3969/j.issn.0253-6099.2025.04.035
  • Receive Date：2025-01-25
  • Online Date：2026-03-05
  • Published：2025-08-01
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  • Received：2025-01-25
Affiliations
    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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