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Electrically assisted solid state lap joining of dissimilar steel S45C and aluminum 6061-T6 alloy

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Abstract
Lap joining of dissimilar steel S45C and aluminum 6061-T6 alloy sheets in the solid state is conducted by means of electrically assisted pressure joining (EAPJ). During joining, electric current is applied to a specimen assembly under continuously compressive plastic deformation. Additional holding time at the elevated temperature is also applied by periodically applying electric current after the completion of compressive deformation to enhance the diffusion between the steel and aluminum alloy sheets. Microstructural analysis confirms the solid-state joining and shows that the microstructure of the joint strongly depends on the process parameters. Quasi-static lap shear tensile testing shows that joint strength increases with increasing electric current density and with increasing holding time at the elevated temperature. Fracture surface morphology suggests that brittle fracture occurs at the interface between the steel and aluminum alloy, with some amount of intermetallic compound sticking to the steel side. The present study confirms that the EAPJ concept is applicable to the joining of steel and aluminum alloy in solid state.
Author(s)
장승위고곤홍성태Hyunuk AhnYoongil Choi이시환한흥남
Issued Date
2021
Type
Article
Keyword
Electrically assisted pressure joiningSolid stateDissimilarSteel S45CAluminum 6061-T6
DOI
10.1016/j.jmrt.2021.02.091
URI
https://oak.ulsan.ac.kr/handle/2021.oak/8852
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_doaj_primary_oai_doaj_org_article_06cc293bf19c4c319c42681af3a05b1a&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Electrically%20assisted%20solid%20state%20lap%20joining%20of%20dissimilar%20steel%20S45C%20and%20aluminum%206061-T6%20alloy&offset=0&pcAvailability=true
Publisher
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Location
네덜란드
Language
영어
ISSN
2238-7854
Citation Volume
12
Citation Number
1
Citation Start Page
271
Citation End Page
282
Appears in Collections:
Engineering > Mechanical and Automotive Engineering
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