Stress induced ordering due interstitials in Nb-4.7 at.%Ta

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dc.contributor.authorde Almeida, L. H.
dc.contributor.authorGrandini, Carlos Roberto [UNESP]
dc.contributor.authorMachado, JPB
dc.contributor.authorRodrigues, D.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:20:23Z
dc.date.available2014-05-20T15:20:23Z
dc.date.issued2005-12-05
dc.description.abstractThe presence of interstitial elements in metals cause strong changes in their physical, chemical or mechanical properties. These interstitial impurities interact with the metallic matrix atoms by a relaxation process known as stress induced ordering. Relaxation processes give rise to a peak in the internal friction spectrum, known as Snock effect. The presence of substitutional solutes has a strong influence on Snoek effect, particularly if the substitutional solute element is the one, which interacts with the interstitial element. Anelastic spectroscopy measurements provide information of the behavior of these impurities in the metallic matrix. In this paper, polycrystalline samples of Nb-4.7 at.%Ta alloy have been analyzed in the as-received condition. Measurements of anelastic spectroscopy were carried out using an inverted torsion pendulum, operating with frequency of 2.0-30.0 Hz and in a temperature range between 300 and 700 K. It was observed the presence of a relaxation structure that have been attributed to stress induced ordering due to interstitial atoms around atoms of the metallic matrix. The relaxation structure have been decomposed in its constituent peaks, what it allowed to identify the following relaxation processes: Ta-O, Nb-O and Nb-N. (c) 2005 Elsevier B.V. All rights reserved.en
dc.description.affiliationUNESP, Grp Relaxacoes Anelast, BR-17033360 Bauru, SP, Brazil
dc.description.affiliationUSP, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationFAENQUIL, Dept Mat Engn, BR-12600000 Lorena, SP, Brazil
dc.description.affiliationUnespUNESP, Grp Relaxacoes Anelast, BR-17033360 Bauru, SP, Brazil
dc.format.extent230-234
dc.identifierhttp://dx.doi.org/10.1016/j.msea.2005.08.218
dc.identifier.citationMaterials Science and Engineering A-structural Materials Properties Microstructure and Processing. Lausanne: Elsevier B.V. Sa, v. 412, n. 1-2, p. 230-234, 2005.
dc.identifier.doi10.1016/j.msea.2005.08.218
dc.identifier.issn0921-5093
dc.identifier.lattes2949983867418338
dc.identifier.orcid0000-0002-3336-309X
dc.identifier.urihttp://hdl.handle.net/11449/31697
dc.identifier.wosWOS:000234037100038
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMaterials Science and Engineering A: Structural Materials Properties Microstructure and Processing
dc.relation.ispartofjcr3.414
dc.relation.ispartofsjr1,694
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectinternal frictionpt
dc.subjectanelastic spectroscopypt
dc.subjectgases in metalspt
dc.subjectNb-Ta alloyspt
dc.titleStress induced ordering due interstitials in Nb-4.7 at.%Taen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes2949983867418338[2]
unesp.author.orcid0000-0002-3336-309X[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

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