Characterization of Gas Atomized Ni-Mn-Ga powders

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorNilsén, Frans
dc.contributor.authorAaltio, Ilkka
dc.contributor.authorGe, Yanling
dc.contributor.authorLindroos, Tomi
dc.contributor.authorHannula, Simo-Pekka
dc.contributor.departmentDepartment of Materials Science and Engineering
dc.contributor.departmentDepartment of Chemistry and Materials Scienceen
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineeringen
dc.date.accessioned2017-05-03T12:00:37Z
dc.date.available2017-05-03T12:00:37Z
dc.date.issued2015
dc.description.abstractGas atomization is a well-known process for obtaining high quality metallic powders. It produces spherical high-density particles with a controllable particle size distribution. We used gas atomization to obtain two different Ni-Mn-Ga powders and investigated their microstructure, transformation temperatures and magnetic properties as well as the effects of heat treatment on those. The phase and magnetic transformation temperatures of the powders were considerably lower as compared to similar conventionally prepared alloys. Nevertheless, heat treatment of the atomized powder was found to recover the magnetic properties of the materials, probably by releasing the residual strains generated by the rapid solidification during the gas atomization process. Sintering of powders seemed to start at a significantly lower temperature when compared to the powder prepared by ball milling of bulk Ni-Mn-Ga-alloys.en
dc.description.versionPeer revieweden
dc.format.extent4
dc.format.extent879-882
dc.format.mimetypeapplication/pdf
dc.identifier.citationNilsén , F , Aaltio , I , Ge , Y , Lindroos , T & Hannula , S-P 2015 , ' Characterization of Gas Atomized Ni-Mn-Ga powders ' , Materials Today: Proceedings , vol. 2 , no. Supplement 3 , pp. 879-882 . https://doi.org/10.1016/j.matpr.2015.07.422en
dc.identifier.doi10.1016/j.matpr.2015.07.422
dc.identifier.otherPURE UUID: 3af1d80c-368a-4ee8-9261-3d3b89b13df0
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/3af1d80c-368a-4ee8-9261-3d3b89b13df0
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/11745441/1_s2.0_S2214785315006677_main.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/25366
dc.identifier.urnURN:NBN:fi:aalto-201705033767
dc.language.isoenen
dc.relation.ispartofseriesMaterials Today: Proceedingsen
dc.relation.ispartofseriesVolume 2, issue Supplement 3en
dc.rightsopenAccessen
dc.subject.keywordNi-Mn-Ga
dc.subject.keywordgas atomization
dc.subject.keywordmagnetic properties
dc.subject.keywordmicrosturcture
dc.titleCharacterization of Gas Atomized Ni-Mn-Ga powdersen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion

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[article-cris] Kemian tekniikan korkeakoulu / CHEM