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<p>Aluminum alloy hot extrusion profiles have the advantages of light weight and high strength and are widely used in aviation, automobile, digital products, building materials and other fields. After hot extrusion, the mechanical properties vary across different parts of the aluminum alloy profile. In order to solve this problem, the aging treatment of 6082 aluminum alloy guardrail profile was carried out in this paper. The effects of different aging treatments on the microstructure were analyzed by optical microscope, energy spectrum and scanning electron microscope. The effects of different aging treatments on its mechanical properties were analyzed by electronic universal testing machine. The results show that as the aging temperature increases, the tensile strength and microhardness of the alloy initially increase and then decrease, while aging temperature has no significant effect on the uniformity across different parts of the profile. As the aging time prolongs, the precipitation and strengthening effects of the alloy are enhanced, but the uniformity across different parts gradually deteriorates. The tensile strength and microhardness of the alloy increase first and then decrease with the extension of aging time.</p>

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Effect of Aging Treatment on Microstructure, Mechanical Properties and Uniformity of Hot Extrusion Profiles of 6082 Aluminum Alloy

  • 期刊论文

  • 发表日期：

    2026年6月1日

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  • Siyuan Zhai,
  • Qiangchao Shan,
  • Linqing Yang,
  • Han Xiao

摘要

Aluminum alloy hot extrusion profiles have the advantages of light weight and high strength and are widely used in aviation, automobile, digital products, building materials and other fields. After hot extrusion, the mechanical properties vary across different parts of the aluminum alloy profile. In order to solve this problem, the aging treatment of 6082 aluminum alloy guardrail profile was carried out in this paper. The effects of different aging treatments on the microstructure were analyzed by optical microscope, energy spectrum and scanning electron microscope. The effects of different aging treatments on its mechanical properties were analyzed by electronic universal testing machine. The results show that as the aging temperature increases, the tensile strength and microhardness of the alloy initially increase and then decrease, while aging temperature has no significant effect on the uniformity across different parts of the profile. As the aging time prolongs, the precipitation and strengthening effects of the alloy are enhanced, but the uniformity across different parts gradually deteriorates. The tensile strength and microhardness of the alloy increase first and then decrease with the extension of aging time.