锻压技术

近似等温锻造6082铝合金机械法兰盘的组织与性能

英文标题：Microstructure and properties of 6082 aluminum alloy mechanical flanges by approximate isothermal forging

单位：1.临汾职业技术学院机电系山西临汾 041000 2.中国矿业大学电气工程学院江苏徐州 221008 3.北京科技大学天津学院基础部天津 301830

分类号：TH164

出版年,卷(期):页码：2025,50(6):27-32

摘要：

以均匀化6082铝合金为锻前坯料，进行了6082铝合金机械法兰盘的近似等温锻造试验，并进行了显微组织、室温力学性能和耐磨损性能的测试与分析。结果表明，近似等温锻造显著改善了6082铝合金的微观结构，明显提升了其力学性能和耐磨损性能。与锻前坯料相比，近似等温锻造6082铝合金机械法兰盘的平均晶粒尺寸减小66 μm，减幅达80%；α-Al(FeMn)Si析出相由粗大变为细小，不均匀分布变为均匀的弥散分布；抗拉强度增大138 MPa，增幅达66%；屈服强度增大142 MPa，增幅达90%；断后伸长率增大3.5%，增幅达24%。磨损20 min后的磨损体积减小26×10-3 mm3，减幅达55%。

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%.

基金项目：

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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