Transactions of Materials and Heat Treatment

Title：Microstructure and properties of 6082 aluminum alloy mechanical flanges by approximate isothermal forging

Authors： Zhang Zhirong1 Ma Caoyuan2 Li Wenjun1 Chen Ru3

Unit： 1.Mechatronics Department Linfen Vocational and Technical College Linfen 041000 China 2.Institute of Electrical Engineering China University of Mining and Technology Xuzhou 221008 China 3.Basic Courses Department Tianjin College University of Science and Technology Beijing Tianjin 301830 China

KeyWords： approximate isothermal forging 6082 aluminum alloy mechanical flange mechanical property wear resistance property microstructure

ClassificationCode：TH164

year,vol(issue):pagenumber：2025,50(6):27-32

Abstract：

For the homogenized 6082 aluminum alloy billet before forging, the approximate isothermal forging test of 6082 aluminum alloy mechanical flange was conducted, and the microstructure, mechanical properties at room temperature and wear resistance were tested and analyzed. The results indicate that the approximate isothermal forging significantly improves the microstructure of 6082 aluminum alloy, and significantly enhances its mechanical properties and wear resistance. Compared with the billet material before forging, the average grain size of 6082 aluminum alloy mechanical flange forged by approximate isothermal forging decreases by 66 μm, a reduction amplitude of 80%. The precipitation phase of α-Al(FeMn)Si changes from coarse to fine, and the uneven distribution changes to a uniform dispersed distribution. The tensile strength increases by 138 MPa, with a growth amplitude of 66%. The yield strength increases by 142 MPa, with a growth amplitude of 90%. The elongation at break increases by 3.5%, with a growth amplitude of 24%. After 20 minutes of wear, the wear volume decreases by 26×10-3 mm3, a reduction amplitude of 55%.

Funds：

2023年临汾市重点研发项目（2335）；2024中华职业教育社课题（ZJS2024YB09）;2024山西教育科学“十四五”规划课题（GH-240476）；山西教学改革与实践项目(202403021);教育部职业院校教指委课题(ZJYB098)

作者简介：张智荣（1983-），女，硕士，副教授，高级工程师,E-mail：niuniu128@126.com

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