Correlations between processing technology, microstructure and properties of a Ni-rich Ti-Ni shape memory alloy

dc.creatorSASHIHARA, EDUARDO M.
dc.creatorINOUE, PEDRO N.
dc.creatorRIGO, ODAIR D.
dc.creatorLIMA, NELSON B.
dc.creatorOTUBO, JORGE
dc.date2022
dc.date2022-12-13T17:12:05Z
dc.date2022-12-13T17:12:05Z
dc.date.accessioned2023-09-28T14:23:43Z
dc.date.available2023-09-28T14:23:43Z
dc.identifier2238-7854
dc.identifierhttp://repositorio.ipen.br/handle/123456789/33427
dc.identifier20
dc.identifier10.1016/j.jmrt.2022.08.087
dc.identifier0000-0002-6444-9224
dc.identifier84.1
dc.identifier82.25
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9003646
dc.descriptionA Ti-50.8Ni (at.%)/Ti-55.9Ni (wt.%) VIM processed ingot was rotary swaged and rolled in parallel, obtaining bars with a total Area Reduction above 90% (from forged/rolled raw state one). Throughout the successive stages, the microstructural evolution, thermal and mechanical properties were compared. Deformation bands, grain morphology, precipitates and oxidation were evaluated (by OM and SEM/EDS). An essentially (???100%) austenitic phase was detected at room temperature (via XRD/Rietveld method), while the Martensitic Transformation temperatures occurred at negative temperatures (via DSC). The rolled bar got through the process more regularly, with homogeneous and refined structure. Typical defects such as superficial microcracks and creases were relevant in the last stages of the two-dies rotary swaging with inductive heating. The work hardening level (via Hardness Test) was similar in both metal forming processes, being 5???7% more pronounced at the edge area of the bars due to redundant work.
dc.descriptionCoordena????o de Aperfei??oamento de Pessoal de N??vel Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Cient??fico e Tecnol??gico (CNPq)
dc.descriptionCAPES: 88887.511327/2020-00
dc.descriptionCNPq: 307654/2018-4
dc.format3288-3295
dc.relationJournal of Materials Research and Technology
dc.rightsopenAccess
dc.subjectmartensite
dc.subjectnickel alloys
dc.subjecttitanium alloys
dc.subjectmicrostructure
dc.subjectmechanical properties
dc.titleCorrelations between processing technology, microstructure and properties of a Ni-rich Ti-Ni shape memory alloy
dc.typeArtigo de peri??dico
dc.coverageI


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