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Achieving strong friction lap joints of carbon-fiber reinforced plastic and metals by modifying metal surface structure via laser-processing pretreatment

机译:通过激光加工预处理改变金属表面结构实现碳纤维增强塑料和金属的强摩擦圈关节

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摘要

Strong dissimilar joints of metals and carbon fiber reinforced plastic (CFRP) are highly demanded for the lightweight design in many fields, which, however, are rather challenging to achieve directly via welding. In this study, 5052 Al alloy and plain carbon steel were first pretreated by a laser-processing method to create rather coarse porous metal surfaces, which were then welded to polyamide 6 based CFRP using friction lap joining. The maximum tensile shear force of the dissimilar joints of CFRP-Al alloy and CFRP-steel achieved 4.9 kN, and 3.9 kN, respectively, and the joint efficiency achieved 78% and 62%, respectively, which were more than three times as those of the CFRP- as-received metal joints. This is the first report on the strengthening of the metal-CFRP friction based joints via the assisting laser treatment technique. The significant improvement of the joint strength could be attributed to a great increase of the mechanical anchors and the chemical bonding area at the metal-CFRP interface.
机译:在许多领域的轻质设计中,金属和碳纤维增强塑料(CFRP)的强不相似的关节(CFRP)非常苛刻,但是,这种焊接的轻量级设计是直接通过焊接实现的相当具有挑战性。在该研究中,首先通过激光加工方法预处理5052铝合金和普通碳钢,以产生相当粗糙的多孔金属表面,然后使用摩擦圈连接焊接到基于聚酰胺6的CFRP。 CFRP-AL合金和CFRP-钢的不同关节的最大拉伸剪切力分别达到4.9kN,3.9kn,分别达到78%和62%,分别为3倍以上CFRP-接收的金属接头。这是一份通过辅助激光处理技术强化基于金属-CFRP摩擦的关节的第一报告。关节强度的显着改善可以归因于金属-CFRP界面的机械锚和化学粘合面积的大大增加。

著录项

  • 来源
    《Composite Structures》 |2020年第6期|112167.1-112167.11|共11页
  • 作者单位

    Osaka Univ Joining & Welding Res Inst 11-1 Mihogaoka Ibaraki Osaka 5670047 Japan|Chinese Acad Sci Inst Met Res Shenyang Natl Lab Mat Sci 72 Wenhua Rd Shenyang 110016 Peoples R China;

    Chinese Acad Sci Inst Met Res Shenyang Natl Lab Mat Sci 72 Wenhua Rd Shenyang 110016 Peoples R China;

    Osaka Univ Joining & Welding Res Inst 11-1 Mihogaoka Ibaraki Osaka 5670047 Japan;

    Osaka Univ Joining & Welding Res Inst 11-1 Mihogaoka Ibaraki Osaka 5670047 Japan;

    Chinese Acad Sci Inst Met Res Shenyang Natl Lab Mat Sci 72 Wenhua Rd Shenyang 110016 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Friction stir welding; Metal; Carbon-fiber reinforced plastic; Dissimilar joining; Laser processing; Mechanical interlocking;

    机译:摩擦搅拌焊接;金属;碳纤维增强塑料;异种加入;激光加工;机械互锁;

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