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Effect of Quenching Rate on Age Hardening Behavior of 6061 Aluminum Alloy for Building Formwork
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Weichang WEI1, 2, Qichen XIONG3, Zhongjin FENG3, Lei FAN3, Shengdan LIU1, 2, Lingying YE1, 2
Mining and Metallurgical Engineering | 2025, 45(2) : 169 - 173
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Mining and Metallurgical Engineering | 2025, 45(2): 169-173
• MATERIALS •
Effect of Quenching Rate on Age Hardening Behavior of 6061 Aluminum Alloy for Building Formwork
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Weichang WEI1, 2, Qichen XIONG3, Zhongjin FENG3, Lei FAN3, Shengdan LIU1, 2, Lingying YE1, 2
Affiliations
  • 1.School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
  • 2.Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083, Hunan, China
  • 3.Yunnan Aijia Aluminum Co., Ltd., Qujing 655335, Yunnan, China
Published: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.030
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The immersion end quenching method, combined with hardness testing, metallographic microscopy, scanning electron microscopy and transmission electron microscopy, was used to investigate the effect of quenching rate on the age hardening of 6061 aluminum alloy for building formwork. Results show that when the quenching rate decreases from 305 ℃/s to 26 ℃/s, the post-aging hardness of the alloy remains nearly unchanged. However, when the quenching rate drops below 26 ℃/s, the hardness decreases rapidly with further reduction in quenching rate. At quenching rates below 26 ℃/s, solute atoms precipitate from the supersaturated solid solution during cooling, forming β (Mg2Si) phases without strengthening effect at grain boundaries, Al13 (Fe, Cr)3Si2 dispersoids, and dislocations. This reduces the number of β″precipitates in the grains after aging, thereby lowering the alloy hardness. Lower quenching rates result in more β phases and lower post-aging hardness. It is concluded that the quenching rate shall exceed 26 ℃/s for attaining high hardness alloy.

quenching rate  /  6061 aluminum alloy  /  building formwork  /  age hardening  /  immersion end quenching  /  dispersion strengthening  /  hardness
Weichang WEI, Qichen XIONG, Zhongjin FENG, Lei FAN, Shengdan LIU, Lingying YE. Effect of Quenching Rate on Age Hardening Behavior of 6061 Aluminum Alloy for Building Formwork[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 169 -173 . DOI: 10.3969/j.issn.0253-6099.2025.02.030
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Year 2025 volume 45 Issue 2
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doi: 10.3969/j.issn.0253-6099.2025.02.030
  • Receive Date：2024-10-10
  • Online Date：2026-03-19
  • Published：2025-04-01
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  • Received：2024-10-10
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Affiliations
    1.School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
    2.Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083, Hunan, China
    3.Yunnan Aijia Aluminum Co., Ltd., Qujing 655335, Yunnan, 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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