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3D printable low density B2+BCC refractory element based complex concentrated alloy with excellent balance of mechanical properties

hal.structure.identifierDepartment of Materials Science and Engineering
hal.structure.identifierCenter for Agile and Adaptive Manufacturing [CAAAM]
dc.contributor.authorCHESETTI, Advika
hal.structure.identifierCenter for Agile and Adaptive Manufacturing [CAAAM]
hal.structure.identifierUniversity of Texas at Austin [Austin]
dc.contributor.authorBANERJEE, Sucharita
hal.structure.identifierDepartment of Materials Science and Engineering
dc.contributor.authorDASARI, Sriswaroop
hal.structure.identifierDepartment of Materials Science and Engineering
hal.structure.identifierCenter for Agile and Adaptive Manufacturing [CAAAM]
dc.contributor.authorNARTU, Mohan Sai Kiran
hal.structure.identifierDepartment of Materials Science and Engineering
hal.structure.identifierCenter for Agile and Adaptive Manufacturing [CAAAM]
dc.contributor.authorVARAHABHATLA, S.M.
hal.structure.identifierDepartment of Materials Science and Engineering
dc.contributor.authorSHARMA, Abhishek
hal.structure.identifierMRL Materials Resources
dc.contributor.authorRAMAKRISHNAN, Abhishek
hal.structure.identifierMRL Materials Resources
dc.contributor.authorSATKO, Daniel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGORSSE, Stephane
hal.structure.identifierMRL Materials Resources
dc.contributor.authorSALEM, Ayman
hal.structure.identifierDepartment of Materials Science and Engineering
hal.structure.identifierCenter for Agile and Adaptive Manufacturing [CAAAM]
dc.contributor.authorBANERJEE, Rajarshi
dc.date.issued2023-03-01
dc.identifier.issn1359-6462
dc.description.abstractEnWhile complex concentrated alloys (CCAs), involving a large fraction of refractory elements, are promising candidates for structural applications, their relatively high densities, processing challenges, and low plasticity, has retarded their development. Here, we report a 3D printable lowdensity precipitation strengthened CCA of composition, Al10Nb15Ta5Ti30Zr40. The chemical homogeneity in the alloy deposited using laser bed powder fusion process is substantially better as compared to the as-cast ingot. This homogeneity is attributed to the enhanced solubility at the high temperatures experienced during laser melting, small melt pool dimensions, and the high cooling rates. The as-built CCA exhibited an excellent balance of room temperature mechanical properties, a compressive yield stress ~1400 MPa, peak stress ~1700 MPa, and plastic strain exceeding 45%. These properties can be attributed to its unique as-processed microstructure consisting of refined grains incorporating a high density of sub-grain boundaries, containing a nanoscale two-phase mixture of an ordered B2 and disordered BCC solid solution phases.
dc.language.isoen
dc.publisherElsevier
dc.subject.enRefractory high entropy alloys laser additive manufacturing laser powder bed fusion microstructure mechanical properties
dc.subject.enRefractory high entropy alloys
dc.subject.enlaser additive manufacturing
dc.subject.enlaser powder bed fusion
dc.subject.enmicrostructure
dc.subject.enmechanical properties
dc.title.en3D printable low density B2+BCC refractory element based complex concentrated alloy with excellent balance of mechanical properties
dc.typeArticle de revue
dc.identifier.doi10.1016/j.scriptamat.2022.115160
dc.subject.halChimie/Matériaux
bordeaux.journalScripta Materialia
bordeaux.page115160 (8 p.)
bordeaux.volume225
bordeaux.peerReviewedoui
hal.identifierhal-04050245
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04050245v1
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