基于热机械合和塔古奇方法的5052合金FSW的工艺分析和多参数优化
Yuanpeng Liu1, Meixin Ge1, Guang Zeng2
1School of Aerospace Engineering, ZhengZhou University of Aeronautics, Zhengzhou, 450046, China.
Scientific reports
|January 3, 2025
概括
在航空航天应用中优化5052合金的摩擦接接 (FSW),这项研究确定了关键的过程参数. 旋转速度显著影响接温度,从而在最佳设置下提高了拉力和抗强度.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 制造过程 制造过程 制造过程
背景情况:
- 摩擦接 (FSW) 是航空航天领域高强度合金的关键连接技术.
- 优化FSW过程参数对于实现卓越的机械性能和关节完整性至关重要.
- 了解FSW期间的热力学行为对于预防缺陷和提高性能至关重要.
研究的目的:
- 为了研究工艺参数对5052合金FSW.W接温度场的影响.
- 为了确定旋转速度,接速度和隙的最佳组合,以提高接强度.
- 分析参数变化对接缺陷和机械性能的影响.
主要方法:
- 利用基于约翰逊-库克构成模型的热力学模型,并修改了库伦定律.
- 采用Taguchi的直角实验设计,系统地研究过程参数效应.
- 执行了信号与噪声 (S/N) 比率和差异分析 (ANOVA) 以确定重要因素.
主要成果:
- 旋转速度被发现是影响接温度峰值的最重要因素,其次是缩,然后是接速度.
- 最佳参数 (1000 rpm,0.15 mm 缩入,1 mm/s 接速度) 导致终极抗拉强度增加>40%,收益强度增加113.5%.
- 低于最佳的参数导致道缺陷和机械强度降低,在断裂点的Si含量更高.
结论:
- 该研究成功地确定了5052合金的最佳FSW参数,显著提高了关节强度.
- 热力学建模和塔古奇方法在优化FSW过程中被证明是可靠的.
- 结果为改善FSW联合质量和航空航天应用中的性能提供了宝贵的指导.
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