DC Field | Value | Language |
---|---|---|
dc.contributor.author | Arockiakumar, R. | ko |
dc.contributor.author | Park, Joong Keun | ko |
dc.date.accessioned | 2013-03-12T07:49:55Z | - |
dc.date.available | 2013-03-12T07:49:55Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2010-04 | - |
dc.identifier.citation | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.527, no.10-11, pp.2709 - 2713 | - |
dc.identifier.issn | 0921-5093 | - |
dc.identifier.uri | http://hdl.handle.net/10203/101696 | - |
dc.description.abstract | A ultrafine-grain-structured Ti-40Nb-0.3O (wt.%) alloy has been fabricated via equal channel angular extrusion (ECAE) followed by annealing within an alpha + beta two-phase field. The precipitation of alpha-phase was responsible for producing an annealed ultrafine-grain structure of about 1 mu m. As-ECAEed specimen showed a large recovery strain of 3.5% at -125 degrees C, although no superelastic property was observed. Post-annealing of the ECAEed specimen led to a recovery of superelastic behavior. The superelastic strain first increased and then decreased with annealing time. A maximum superelastic strain of 2.5%, on subjecting 896 MPa, was observed at -125 degrees C. The increase of superelastic strain during the initial stage of annealing was due to the precipitation of a-phase leading to oxygen depletion in beta-matrix. The precipitation of alpha-phase also led to a decrease of critical stress for stress induced martensitic transformation and to an increase of critical stress for slip. (C) 2010 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | SHAPE-MEMORY BEHAVIOR | - |
dc.subject | MECHANICAL-PROPERTIES | - |
dc.subject | INDUCED MARTENSITE | - |
dc.title | Effect of alpha-precipitation on the superelastic behavior of Ti-40 wt.%Nb-0.3 wt.%O alloy processed by equal channel angular extrusion | - |
dc.type | Article | - |
dc.identifier.wosid | 000276137600035 | - |
dc.identifier.scopusid | 2-s2.0-77249143325 | - |
dc.type.rims | ART | - |
dc.citation.volume | 527 | - |
dc.citation.issue | 10-11 | - |
dc.citation.beginningpage | 2709 | - |
dc.citation.endingpage | 2713 | - |
dc.citation.publicationname | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | - |
dc.contributor.localauthor | Park, Joong Keun | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Superelasticity | - |
dc.subject.keywordAuthor | Shape memory alloy | - |
dc.subject.keywordAuthor | Ti-Nb-O | - |
dc.subject.keywordAuthor | ECAE | - |
dc.subject.keywordAuthor | Alpha phase | - |
dc.subject.keywordPlus | SHAPE-MEMORY BEHAVIOR | - |
dc.subject.keywordPlus | MECHANICAL-PROPERTIES | - |
dc.subject.keywordPlus | INDUCED MARTENSITE | - |
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