다결정 TiAl + Mo 합금의 인장변형특성 및 층상조직의 제어Tensile Deformation Behavior and Lamellar Structure Control of Polycrystalline TiAl+Mo Alloy

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dc.contributor.author김민길ko
dc.contributor.author오명훈ko
dc.contributor.author이재현ko
dc.contributor.author위당문ko
dc.date.accessioned2013-03-03T06:43:09Z-
dc.date.available2013-03-03T06:43:09Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued1997-01-
dc.identifier.citation대한금속·재료학회지, v.35, no.1, pp.31 - 37-
dc.identifier.issn1738-8228-
dc.identifier.urihttp://hdl.handle.net/10203/77661-
dc.description.abstractThe effect of Mo additions on the microstructure and the room temperature deformation behavior of directionally solidified (DS) and polycrystalline forms of two-phase TiAl alloys were systematically investigated. Tensile elongation as large as 6.5% was observed for a polycrystalline specimen with duplex structure, but it varied with the strain rate and the test environments. In case of the fully lamellar structure, however, tensile elongation lover than 1% was obtained both in polycrystalline and in DS specimens. It was found from directional solidification studies that the lamellar boundary orientation in DS ingot has been affected by the growth rate and Mo contents. In case of Ti-48.5at.%Al-0.6at.%Mo DS ingot grown at a growth rate of 300 ㎜/hr, the lamellar boundary was nearly perpendicular to the growth direction. However, the lamellar boundary orientation of Ti-47.5at.%Al-2.5at.%Mo DS ingot was nearly parallel to the growth direction when the directional solidification was performed at a growth rate of 90 ㎜/hr. These results have shown that solidification procedures of TiAl with a nearly stoichiometric composition has been affected by Mo addition and, therefore, the lamellar boundary orientation in DS ingot could be controlled by changing the growth rate and the content of Mo additions.-
dc.languageKorean-
dc.publisher대한금속·재료학회-
dc.title다결정 TiAl + Mo 합금의 인장변형특성 및 층상조직의 제어-
dc.title.alternativeTensile Deformation Behavior and Lamellar Structure Control of Polycrystalline TiAl+Mo Alloy-
dc.typeArticle-
dc.type.rimsART-
dc.citation.volume35-
dc.citation.issue1-
dc.citation.beginningpage31-
dc.citation.endingpage37-
dc.citation.publicationname대한금속·재료학회지-
dc.contributor.localauthor위당문-
dc.contributor.nonIdAuthor김민길-
dc.contributor.nonIdAuthor오명훈-
dc.contributor.nonIdAuthor이재현-
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