Nanoindentation on the Transformation of LPSO Phases during Different Solution Heat Treatments in an Mg-Dy-Nd-Zn-Zr Alloy

dc.contributor.authorMaier, Petra
dc.contributor.authorSchmahl, Merle
dc.contributor.authorClausius, Benjamin
dc.contributor.authorJoy, Charis
dc.contributor.authorFleck, Claudia
dc.date.accessioned2023-01-19T14:38:20Z
dc.date.available2023-01-19T14:38:20Z
dc.date.issued2022-11-20
dc.date.updated2022-12-07T13:27:24Z
dc.description.abstractThe objective of this study is the investigation of nanomechanical properties using nanoindentation of extruded and heat-treated Mg-Dy-Nd-Zn-Zr, with an emphasis on the transformation of long-period stacking-ordered (LPSO) phases. Solution heat treatment was performed with different heat treatment for durations on hot extruded Mg-Dy-Nd-Zn-Zr to monitor the transformation of LPSO phases, as well as to keep track of microstructural changes. The initial fine-grained microstructure, with blocky and lamellar LPSO structures within the matrix, first transformed into coarser grains with fewer LPSO lamellae, which then increased in amount again at higher annealing duration. The blocky LPSO phases, which have the highest hardness compared to the matrix grains with and without LPSO lamellae, consistently decrease in quantity, as so does the trend in their hardness value. The Mg matrix grains with LPSO lamellae show a lower hardness compared to the Mg matrix grains without or with a just few lamellar LPSO phases, and increase in quantity at long annealing durations. The overall hardness of the microstructure is essentially determined by the LPSO lamellae-containing grains and reaches a peak at 24 h. There is another peak found for the grain size values; however, this is at later annealing duration, at 72 h. The reduction in grain size towards longer annealing durations goes along with a reactivated formation of LPSO lamellae.
dc.identifier.eissn2073-4352
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/18021
dc.identifier.urihttps://doi.org/10.14279/depositonce-16813
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete Tätigkeitende
dc.subject.othernanoindentation
dc.subject.othernanohardness
dc.subject.otherLPSO phase transformation
dc.subject.otherdissolution
dc.subject.otherprecipitation
dc.titleNanoindentation on the Transformation of LPSO Phases during Different Solution Heat Treatments in an Mg-Dy-Nd-Zn-Zr Alloy
dc.typeArticle
dc.type.versionpublishedVersion
dcterms.bibliographicCitation.articlenumber1673
dcterms.bibliographicCitation.doi10.3390/cryst12111673
dcterms.bibliographicCitation.issue11
dcterms.bibliographicCitation.journaltitleCrystals
dcterms.bibliographicCitation.originalpublishernameMDPI
dcterms.bibliographicCitation.originalpublisherplaceBasel
dcterms.bibliographicCitation.volume12
dcterms.rightsHolder.referenceCreative-Commons-Lizenz
tub.accessrights.dnbfree
tub.affiliationFak. 3 Prozesswissenschaften::Inst. Werkstoffwissenschaften und -technologien::FG Werkstofftechnik
tub.publisher.universityorinstitutionTechnische Universität Berlin

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