DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, SW | ko |
dc.contributor.author | Wang, P | ko |
dc.contributor.author | Oh, MH | ko |
dc.contributor.author | Wee, Dang-Moon | ko |
dc.contributor.author | Kumar, KS | ko |
dc.date.accessioned | 2013-03-04T13:57:24Z | - |
dc.date.available | 2013-03-04T13:57:24Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2004-05 | - |
dc.identifier.citation | INTERMETALLICS, v.12, no.5, pp.499 - 509 | - |
dc.identifier.issn | 0966-9795 | - |
dc.identifier.uri | http://hdl.handle.net/10203/82860 | - |
dc.description.abstract | The microstructure and mechanical properties of directionally solidified Ti-47Al-3Nb, Ti-47Al-3Nb-0.2Si-0.1C, Ti-47Al-3Nb-0.3Si-0.2C alloys were evaluated. The lamellar thickness of Si- and C-doped alloys was fine and uniform, and little or no precipitates were found within the lamellae or Lit inter-lamellar interfaces. Room temperature yield stress increased rapidly with increasing Si and C contents. likely due to solid solution hardening as well as clue to a reduction in lamellar spacing distribution. However, fracture toughness of "type-I" specimens of the alloys decreased marginally as Si and C were introduced and as their content increased. It is argued that the alpha(2) volume fraction decreases with increasing Si and C contents so that the frequency of delamination-type separation decreases, and this feature is thought to principally contribute to the high crack growth resistance of "type-I" specimens. Furthermore. fracture toughness of Ti-47Al-3Nb-0.2Si-0.1C alloy specimens with "type-III" orientation. polvcrystalline form, and with "type-I" orientation increased in order of "type-III" --> polycrystal --> "type-I". These results Lire discussed and the ability to obtain a respectable combination of strength and toughness through Si and C addition to a TiAlNb alloy produced by directional solidification is demonstrated. (C) 2004 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.subject | GAMMA-TITANIUM ALUMINIDES | - |
dc.subject | FRACTURE-RESISTANCE | - |
dc.subject | CRACK-PROPAGATION | - |
dc.subject | PST CRYSTALS | - |
dc.subject | DEFORMATION | - |
dc.subject | ORIENTATION | - |
dc.subject | TOUGHNESS | - |
dc.subject | BEHAVIOR | - |
dc.subject | SYSTEM | - |
dc.subject | MO | - |
dc.title | Mechanical properties of Si- and C-doped directionally solidified TiAl-Nb alloys | - |
dc.type | Article | - |
dc.identifier.wosid | 000221009600006 | - |
dc.identifier.scopusid | 2-s2.0-1842581332 | - |
dc.type.rims | ART | - |
dc.citation.volume | 12 | - |
dc.citation.issue | 5 | - |
dc.citation.beginningpage | 499 | - |
dc.citation.endingpage | 509 | - |
dc.citation.publicationname | INTERMETALLICS | - |
dc.identifier.doi | 10.1016/j.intermet.2004.01.004 | - |
dc.contributor.localauthor | Wee, Dang-Moon | - |
dc.contributor.nonIdAuthor | Kim, SW | - |
dc.contributor.nonIdAuthor | Wang, P | - |
dc.contributor.nonIdAuthor | Oh, MH | - |
dc.contributor.nonIdAuthor | Kumar, KS | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | titanium aluminides, based on TiAl | - |
dc.subject.keywordAuthor | yield stress | - |
dc.subject.keywordAuthor | fracture toughness | - |
dc.subject.keywordAuthor | mechanical testing | - |
dc.subject.keywordPlus | GAMMA-TITANIUM ALUMINIDES | - |
dc.subject.keywordPlus | FRACTURE-RESISTANCE | - |
dc.subject.keywordPlus | CRACK-PROPAGATION | - |
dc.subject.keywordPlus | PST CRYSTALS | - |
dc.subject.keywordPlus | DEFORMATION | - |
dc.subject.keywordPlus | ORIENTATION | - |
dc.subject.keywordPlus | TOUGHNESS | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | SYSTEM | - |
dc.subject.keywordPlus | MO | - |
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