In situ structural and texture analyses of monoclinic phase for polycrystalline Ni-rich T49.86Ni50.14 alloy from neutron diffraction data

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dc.contributorVirginia Techen
dc.contributor.authorSitepu, H.en
dc.contributor.departmentGeosciencesen
dc.date.accessed2014-07-15en
dc.date.accessioned2014-07-21T15:49:43Zen
dc.date.available2014-07-21T15:49:43Zen
dc.date.issued2008-03en
dc.description.abstractPhase transformation temperatures of a polycrystalline Ni-rich Ti49.86Ni50.14 shape memory alloy were investigated using a differential scanning calorimeter. In situ structural and texture analyses of the monoclinic Ti49.86Ni50.14 were investigated using neutron powder diffractometer technique. Differential scanning calorimeter results showed that this Ni-rich alloy has a one-step cubic to monoclinic martensitic phase transformation on cooling and a one-step monoclinic to cubic transformation on heating. In situ high-resolution neutron powder diffraction data of the monoclinic phase from low temperatures to room temperature on heating are consistent with the differential scanning calorimeter's heating results. In addition, the refined monoclinic crystal structure parameters for all neutron diffraction data sets agree satisfactorily with single-crystal X-ray diffraction results. The multiple-data-set capabilities of the GSAS Rietveld refinement program, with a generalized spherical-harmonics description was used successfully to extract the texture description directly from a simultaneous refinement using 52 time-of-flight monoclinic neutron diffraction patterns, taken from a polycrystalline sample held in 13 orientations inside the diffractometer. (c) 2008 International Centre for Diffraction Data.en
dc.description.sponsorshipCOMPRES under NSF Cooperative Agreement No. EAR 01-35554en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSitepu, H., "In situ structural and texture analyses of monoclinic phase for polycrystalline Ni-rich T49.86Ni50.14 alloy from neutron diffraction data," Powder Diffr., Vol. 23(1), 2008. DOI: 10.1154/1.2839141en
dc.identifier.doihttps://doi.org/10.1154/1.2839141en
dc.identifier.issn0885-7156en
dc.identifier.urihttp://hdl.handle.net/10919/49654en
dc.identifier.urlhttp://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8490189&fulltextType=RA&fileId=S0885715600000634en
dc.language.isoenen
dc.publisherCambridge University Pressen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectneutron powder diffractionen
dc.subjecttextureen
dc.subjectmartensitic phase transformationen
dc.subjectti49.86ni50.14 shape memory alloyen
dc.subjectdifferential scanning calorimeteren
dc.subjectshape-memory alloyen
dc.subjectpreferred orientationen
dc.subjectrietveld refinementen
dc.subjectcrystal-structureen
dc.subjectmartensiteen
dc.subjectspectraen
dc.subjecttinien
dc.subjectmaterials science, characterization & testingen
dc.titleIn situ structural and texture analyses of monoclinic phase for polycrystalline Ni-rich T49.86Ni50.14 alloy from neutron diffraction dataen
dc.title.serialPowder Diffractionen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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