DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee J.K | ko |
dc.contributor.author | Oh M.W | ko |
dc.contributor.author | Oh M.H | ko |
dc.contributor.author | Wee, Dang-Moon | ko |
dc.date.accessioned | 2013-03-04T17:06:54Z | - |
dc.date.available | 2013-03-04T17:06:54Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2003-08 | - |
dc.identifier.citation | INTERMETALLICS, v.11, no.8, pp.857 - 865 | - |
dc.identifier.issn | 0966-9795 | - |
dc.identifier.uri | http://hdl.handle.net/10203/83376 | - |
dc.description.abstract | Compressive tests on Al-21Ti-23Cr (L1(2)+Cr2Al), Al-21Ti-15Cr (L1(2)+Al17Cr9) and Al-30Ti-15Cr (L1(2)+TiAl+TiAlCr) alloys were performed to investigate the effects of alloy compositions on the phase stability of L1(2)-based alloys at temperatures below 1000 degreesC. In Al-30Ti-15Cr alloy, yield strength increased significantly after exposure at 800 degreesC as compared to the other two alloys. Microstructure observation and phase identification confirmed that the Al-30Ti-15Cr alloy with Ti-rich composition exhibited complete decomposition of the L1(2) phase in contrast to partial decomposition of the L1(2) phase in Al-21Ti-23Cr and Al-21Ti-15Cr alloys under the same conditions. This results from the fact that the L1(2) phase field is shifted in the direction of the Al-rich corner with decreasing temperature in the Al-Ti-Cr phase diagram. The fracture toughness of Al-30Ti-15Cr alloy from three-point bend tests was more degraded after exposure at 800 degreesC than the other two alloys because the Al-30Ti-15Cr alloy exhibited poor phase stability due to its higher Ti content. Therefore, L1(2)-based alloys with higher Al-rich composition are more appropriate as coating materials when considering phase stability coupled with fracture toughness. (C) 2003 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.publisher | Elsevier Sci Ltd | - |
dc.subject | MECHANICAL-PROPERTIES | - |
dc.subject | OXIDATION BEHAVIOR | - |
dc.subject | MICROSTRUCTURE | - |
dc.title | Phase stability of L12-based alloys in Al-Ti-Crsystems | - |
dc.type | Article | - |
dc.identifier.wosid | 000184728000014 | - |
dc.identifier.scopusid | 2-s2.0-0041992348 | - |
dc.type.rims | ART | - |
dc.citation.volume | 11 | - |
dc.citation.issue | 8 | - |
dc.citation.beginningpage | 857 | - |
dc.citation.endingpage | 865 | - |
dc.citation.publicationname | INTERMETALLICS | - |
dc.contributor.localauthor | Wee, Dang-Moon | - |
dc.contributor.nonIdAuthor | Lee J.K | - |
dc.contributor.nonIdAuthor | Oh M.W | - |
dc.contributor.nonIdAuthor | Oh M.H | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | trialummides | - |
dc.subject.keywordAuthor | fracture toughness | - |
dc.subject.keywordAuthor | phase stability | - |
dc.subject.keywordPlus | MECHANICAL-PROPERTIES | - |
dc.subject.keywordPlus | OXIDATION BEHAVIOR | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
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