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

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Abstract
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 fabricated using refill friction stir spot welding (RFSSW). A maximum tensile shear load of 1.6 kN was measured for untreated AA 6014/CFRP specimens. Microscopy images of the Al?CFRP joints exhibited tight bonding along the joint interface without any noticeable defects. Moreover, Al?O?C, C?C, and C=O chemical bonds were detected on the tensile?shear fracture surfaces of both the Al alloy and CFRP sheets using X-ray photoelectron spectroscopy. Micro-mechanical interlocking and chemical bond formation were the key factors contributing to the tensile shear strength of the RFSSW joint. This study demonstrated that the RFSSW technique is a suitable bonding method for manufacturing metal?polymer hybrid structures.
Author(s)
Andrews Nsiah AshongMokyoung Lee홍성태Youn Seoung LeeJeoung Han Kim
Issued Date
2021
Type
Article
Keyword
AlloysArticleCharacterization and Evaluation of MaterialsChemistry and Materials ScienceEngineering ThermodynamicsFractures (Geology)Heat and Mass TransferMachinesMagnetic MaterialsMagnetismManufacturingMaterials ScienceMechanical engineeringMetallic MaterialsPolymer industryPolymersProcessesSolid MechanicsToolsWeldingX-ray spectroscopy재료공학
DOI
10.1007/s12540-020-00788-5
URI
https://oak.ulsan.ac.kr/handle/2021.oak/8848
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_nrf_kci_oai_kci_go_kr_ARTI_9765275&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Refill%20Friction%20Stir%20Spot%20Welding%20of%20Dissimilar%20AA6014%20Al%20Alloy%20and%20Carbon-Fiber-Reinforced%20Polymer%20Composite&offset=0&pcAvailability=true
Publisher
METALS AND MATERIALS INTERNATIONAL
Location
대한민국
Language
영어
ISSN
1598-9623
Citation Volume
27
Citation Number
4
Citation Start Page
639
Citation End Page
649
Appears in Collections:
Engineering > Mechanical and Automotive Engineering
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