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首页> 外文期刊>Journal of Manufacturing Processes >Single-sided joining of aluminum alloys using friction self-piercing riveting (F-SPR) process
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Single-sided joining of aluminum alloys using friction self-piercing riveting (F-SPR) process

机译：使用摩擦自冲铆接（F-SPR）工艺的铝合金单面连接

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摘要

Friction self-piercing riveting (F-SPR) process has shown advantages over traditional self-piercing riveting (SPR) process in joining magnesium alloys and aluminum alloys. Frictional heat produced by the rotation of the rivet plays important roles to the inhibition of cracking in riveting low ductility materials and the formation of solid-state bonding. However, the current F-SPR process needs a matching die to facilitate rivet deformation and formation of mechanical interlock between lower sheet and the rivet, which poses a big challenge in riveting large thin-walled structures, where a matching die is hard to apply. In this research, single-sided F-SPR process was proposed to join 2.2 mm-thick aluminum alloy AA6061-T6 to 3.0 mm-thick aluminum alloy AA6061-T6, and effects of process parameters, e.g., rotation speed and feed rate, on the morphology and mechanical properties of the joints were studied experimentally. It was found that higher rotation speed and lower feed rate which signified higher heat input could effectively reduce defects but lead to insufficient undercut. As such, a two-stage process was proposed to reduce frictional heat generation in lower sheet and thus increase the deformation resistance acted at the rivet tip. A preliminary study showed that the two-stage F-SPR process increased the tensile-shear and cross-tension strengths by around 25% and 81% respectively, compared to the one-stage process.
机译：摩擦自冲铆接（F-SPR）工艺在连接镁合金和铝合金方面比传统的自冲铆接（SPR）工艺更具优势。铆钉旋转产生的摩擦热对于抑制铆接低延展性材料的裂纹和形成固态键合起重要作用。然而，当前的F-SPR工艺需要匹配的模具以促进铆钉变形以及在下部薄板和铆钉之间形成机械互锁，这在铆接大型薄壁结构时是一个巨大的挑战，因为难以应用匹配的模具。在这项研究中，提出了单面F-SPR工艺，以将2.2毫米厚的铝合金A6061-T6与3.0毫米厚的AA6061-T6铝合金接合，并且工艺参数如转速和进给速度对对接头的形貌和力学性能进行了实验研究。发现较高的转速和较低的进给速度表示较高的热量输入可以有效地减少缺陷，但会导致咬边不足。因此，提出了一种分两步进行的工艺，以减少下部薄板中的摩擦热产生，从而增加作用在铆钉尖端的变形阻力。初步研究表明，与一级工艺相比，二级F-SPR工艺分别使拉伸剪切强度和横向拉伸强度分别提高了约25％和81％。

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  • 来源
    《Journal of Manufacturing Processes》 |2019年第2期|319-327|共9页
  • 作者

    Xian Xirui; Ma Yunwu; Shan He; Niu Sizhe; Li Yongbing;

  • 作者单位

    Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai, Peoples R China|Shanghai Jiao Tong Univ, Shanghai Key Lab Digital Manufacture Thin Walled, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai, Peoples R China|Shanghai Jiao Tong Univ, Shanghai Key Lab Digital Manufacture Thin Walled, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai, Peoples R China|Shanghai Jiao Tong Univ, Shanghai Key Lab Digital Manufacture Thin Walled, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai, Peoples R China|Shanghai Jiao Tong Univ, Shanghai Key Lab Digital Manufacture Thin Walled, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai, Peoples R China|Shanghai Jiao Tong Univ, Shanghai Key Lab Digital Manufacture Thin Walled, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Single-sided joining; Friction self-piercing riveting; Aluminum alloy; Mechanical performance;

    机译：单面连接;摩擦自冲铆接;铝合金;机械性能;

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