Improved mechanical properties of cast Mg alloy welds via texture weakening by differential rotation refill friction stir spot welding

dc.contributor.authorFu, Banglong
dc.contributor.authorShen, Junjun
dc.contributor.authorSuhuddin, Uceu F. H. R.
dc.contributor.authorChen, Ting
dc.contributor.authorSantos, Jorge F. dos
dc.contributor.authorKlusemann, Benjamin
dc.contributor.authorRethmeier, Michael
dc.date.accessioned2021-11-04T10:00:43Z
dc.date.available2021-11-04T10:00:43Z
dc.date.issued2021-07-07
dc.description.abstractCast magnesium alloys welds produced by refill friction stir spot welding (refill FSSW) show low lap shear strength (LSS) and constantly fail in stirred zone (SZ) shear mode. The cause is most probably related to the heavily textured microstructure. Here, to re-engineer the resulting microstructure, we propose a novel process variant, the differential rotation refill FSSW (DR-refill FSSW). DR-refill FSSW stimulates discontinuous dynamic recrystallization and produces a bimodal microstructure with weakened texture. Therefore, the deformation incompatibility between SZ and thermal-mechanically affected zone is avoided. The welds have 50% higher LSS than that of standard refill FSSW welds, and fail in a different failure mode, i.e., SZ pull-out mode. DR-refill FSSW provides a new and effective strategy for improving the performance of spot welds based on microstructural engineering.en
dc.identifier.eissn1872-8456
dc.identifier.issn1359-6462
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/13806
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-12582
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc670 Industrielle Fertigungde
dc.subject.otherrefill friction stir spot weldingen
dc.subject.othermagnesium alloyen
dc.subject.othertextureen
dc.subject.otherEBSDen
dc.subject.otherplastic deformationen
dc.titleImproved mechanical properties of cast Mg alloy welds via texture weakening by differential rotation refill friction stir spot weldingen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber114113en
dcterms.bibliographicCitation.doi10.1016/j.scriptamat.2021.114113en
dcterms.bibliographicCitation.journaltitleScripta Materialiaen
dcterms.bibliographicCitation.originalpublishernameElsevieren
dcterms.bibliographicCitation.originalpublisherplaceAmsterdamen
dcterms.bibliographicCitation.volume203en
tub.accessrights.dnbfreeen
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme::Inst. Werkzeugmaschinen und Fabrikbetrieb::FG Fügetechnikde
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Fügetechnikde
tub.affiliation.instituteInst. Werkzeugmaschinen und Fabrikbetriebde
tub.publisher.universityorinstitutionTechnische Universität Berlinen
Files
Original bundle
Now showing 1 - 1 of 1
Loading…
Thumbnail Image
Name:
Fu_etal_Improved_2021.pdf
Size:
3.42 MB
Format:
Adobe Portable Document Format
Description:
License bundle
Now showing 1 - 1 of 1
Loading…
Thumbnail Image
Name:
license.txt
Size:
5.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Collections