Refill Friction Stir Spot Welding of Dissimilar AA6014 Al Alloy and Carbon-Fiber-Reinforced Polymer Composite

Andrews Nsiah Ashong; Mokyoung Lee; Sung‑Tae Hong; Youn Seoung Lee; Jeoung Han Kim

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자료유형: 학술저널

저자정보: Andrews Nsiah Ashong (Hanbat National University) Mokyoung Lee (POSCO Global R&D Center) Sung‑Tae Hong (University of Ulsan) Youn Seoung Lee (Hanbat National University) Jeoung Han Kim (Hanbat National University)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.4

발행연도: 2021.1

수록면: 639 - 649 (11page)

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Both Al and carbon-fiber-reinforced polymer (CFRP) are being investigated as lightweight materials for automobile applications. To form effective hybrid materials from Al and CFRP, strong bonding between these two dissimilar materials is critical. Here, we analyzed the microstructure and tensile shear strength of joints between an Al alloy (AA 6014) and CFRP fabricatedusing refill friction stir spot welding (RFSSW). A maximum tensile shear load of 1.6 kN was measured for untreated AA6014/CFRP specimens. Microscopy images of the Al–CFRP joints exhibited tight bonding along the joint interface withoutany noticeable defects. Moreover, Al–O–C, C–C, and C=O chemical bonds were detected on the tensile–shear fracturesurfaces of both the Al alloy and CFRP sheets using X-ray photoelectron spectroscopy. Micro-mechanical interlocking andchemical bond formation were the key factors contributing to the tensile shear strength of the RFSSW joint. This studydemonstrated that the RFSSW technique is a suitable bonding method for manufacturing metal–polymer hybrid structures.

#Refill friction stir spot welding · Dissimilar joining · Micro-mechanical interlocking · Chemical bonding

참고문헌 (50)

참고문헌 신청

Y. Chen / 2019 / Thin Walled Struct 139:271

Peng Chai / 2019 / Effect of Rotational Speed on Microstructure and Mechanical Properties of 2060 Aluminum Alloy RFSSW Joint / Metals and Materials International 25(6):1574~1585

Z. Zhang / 2016 / Int. J. Adhes. Adhes 70:142

W. Mu / 2019 / Compos. Part B 168:87

A. Jacob / 2013 / Reinf. Plast 54:38

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