Characterization of Gas Atomized Ni-Mn-Ga powders

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Nilsén, Frans Aaltio, Ilkka Ge, Yanling Lindroos, Tomi Hannula, Simo-Pekka 2017-05-03T12:00:37Z 2017-05-03T12:00:37Z 2015
dc.identifier.citation Nilsén , 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 . DOI: 10.1016/j.matpr.2015.07.422 en
dc.identifier.other PURE UUID: 3af1d80c-368a-4ee8-9261-3d3b89b13df0
dc.identifier.other PURE ITEMURL:
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dc.description.abstract Gas 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.format.extent 4
dc.format.extent 879-882
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Materials Today: Proceedings en
dc.relation.ispartofseries Volume 2, issue Supplement 3 en
dc.rights openAccess en
dc.subject.other 216 Materials engineering en
dc.subject.other 221 Nanotechnology en
dc.title Characterization of Gas Atomized Ni-Mn-Ga powders en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Materials Science and Engineering
dc.contributor.department Department of Chemistry and Materials Science en
dc.contributor.department Department of Chemical and Metallurgical Engineering en
dc.subject.keyword Ni-Mn-Ga
dc.subject.keyword gas atomization
dc.subject.keyword magnetic properties
dc.subject.keyword microsturcture
dc.subject.keyword 216 Materials engineering
dc.subject.keyword 221 Nanotechnology
dc.identifier.urn URN:NBN:fi:aalto-201705033767
dc.identifier.doi 10.1016/j.matpr.2015.07.422
dc.type.version publishedVersion

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