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Effect of Homogenization Process on Microstructure Evolution of Al-Zn-Mg-(Cu) Alloys for 3C Products
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Jun LI1, Guotong ZOU1, Lingying YE1, Keda JIANG2, Shitong FAN2
Mining and Metallurgical Engineering | 2026, 46(3) : 291 - 297
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Mining and Metallurgical Engineering | 2026, 46(3): 291-297
• MATERIALS •
Effect of Homogenization Process on Microstructure Evolution of Al-Zn-Mg-(Cu) Alloys for 3C Products
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Jun LI1, Guotong ZOU1, Lingying YE1, Keda JIANG2, Shitong FAN2
Affiliations
  • 1.School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
  • 2.Taishan Kam Kiu Aluminium Extrusion Co., Ltd., Jiangmen 529261, Guangdong, China
doi: 10.3969/j.issn.0253-6099.2026.03.044
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Homogenization treatment under different conditions were carried out for Al-Zn-Mg-(Cu) alloys applied to 3C products, and the end-quenching method and DSC measurement were adopted to investigate the effect of homogenization cooling rate on microstructure. It is found that the optimal homogenization regime is 470 ℃ for 2 hours plus 510 ℃ for 18 hours. Under these conditions, low-melting eutectic phases such as AlZnMg and MgZn2 are completely eliminated, while the area fraction of refractory phases like AlFeSi and AlFeMnSi significantly decreases. During the homogenization cooling, MgZn2 phase precipitates along grain boundaries when the cooling rate is lower than 11 ℃／s. With the cooling rate of 0.083-0.833 ℃／s, the MgZn2 phase precipitates both at grain boundaries and inside grains, the initial precipitation temperature of MgZn2 phase ranges from 417 ℃ to 451 ℃, and the termination temperature ranges from 311 ℃ to 355 ℃.

aluminium alloy  /  Al-Zn-Mg-(Cu)  /  homogenization treatment  /  end quenching  /  cooling rate  /  microstructure evolution  /  precipitated phase
李俊, 邹国童, 叶凌英, 姜科达, 范世通. 均匀化工艺对3C产品用Al-Zn-Mg-（Cu）合金微观组织演变的影响. 矿冶工程杂志, 2026 , 46 (3) : 291 -297 . DOI: 10.3969/j.issn.0253-6099.2026.03.044
Jun LI, Guotong ZOU, Lingying YE, Keda JIANG, Shitong FAN. Effect of Homogenization Process on Microstructure Evolution of Al-Zn-Mg-(Cu) Alloys for 3C Products[J]. Mining and Metallurgical Engineering, 2026 , 46 (3) : 291 -297 . DOI: 10.3969/j.issn.0253-6099.2026.03.044
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Year 2026 volume 46 Issue 3
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doi: 10.3969/j.issn.0253-6099.2026.03.044
  • Receive Date：2025-12-01
  • Online Date：2026-10-08
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  • Received：2025-12-01
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Affiliations
    1.School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
    2.Taishan Kam Kiu Aluminium Extrusion Co., Ltd., Jiangmen 529261, Guangdong, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2026.03.044
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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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