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背板预热辅助系统和深层滚动工艺对微观结构缺陷和轴向力减轻摩擦力的影响 接 AA6061 联合动接 AA6061 联合接
Pinmanee Insua1, Wasawat Nakkiew1, Adirek Baisukhan1
1Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand.
Materials (Basel, Switzerland)
|September 28, 2024
概括
在摩擦动接 (FSW) 过程中进行预热,可显著降低轴向力和道缺陷. 在200°C的最佳预热可以最大限度地减少缺陷,特别是在前进的侧面,改善材料流动和工具透.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
背景情况:
- 摩擦接 (FSW) 是一种固态连接工艺,容易出现道缺陷等缺陷.
- 轴力是影响FSW质量和工具完整性的关键参数.
- 预热和后加工技术,如深 (DR) 被探索,以减轻FSW挑战.
研究的目的:
- 调查后板预热系统对FSW轴力和道缺陷的影响.
- 评估不同的预热配置 (前进侧,后退侧,两侧) 以及它们对FSW参数的影响.
- 评估预热和深 (DR) 对缺陷减少的综合影响.
主要方法:
- 使用后板预热辅助系统,可控制温度配置.
- 在FSW过程中使用动力表测量轴向力.
- 用热摄像头记录温度分布和历史记录.
- 应用深 (DR) 作为后加工步骤,以评估进一步减少缺陷.
主要成果:
- 最佳预热温度为200°C,减小了30.24%的轴向力,改善了材料流动.
- 预热提高了工具的透性,特别是当它应用于前进和后退两侧时.
- 前进侧 (AS) 的预热在最小化道缺陷方面最有效,减少了高达96.91%的缺陷.
- 深 (DR) 进一步减少了道缺陷,但它的有效性受到缺陷深度的限制.
结论:
- 背板预热是一种有效的策略,可以减少轴向力,并最大限度地减少FSW中的道缺陷.
- 优化预热温度和应用方面对于缺陷控制和工艺效率至关重要.
- 将预热与DR相结合,有可能进一步减轻缺陷,尽管表面接近仍然是一个因素.
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