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dc.contributor.author석현광-
dc.contributor.author이희춘-
dc.contributor.author오규환-
dc.contributor.author이재철-
dc.contributor.author이호인-
dc.contributor.author나형용-
dc.date.accessioned2015-12-02T05:07:44Z-
dc.date.available2015-12-02T05:07:44Z-
dc.date.issued200005-
dc.identifier.citationVOL 31, NO 5, 1479-1488-
dc.identifier.issn1073-5623-
dc.identifier.other12283-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/13349-
dc.description.abstractIn rod spray forming, the preform changes its shape continually from that of a disc to a rod (transient-state rod growth) and then maintains its top surface profile once it has settled down (steady-state rod growth). The rod growth mechanism during spray forming was analyzed using rod-forming models. At a sufficiently high substrate rotation velocity, the calculated results based on the three-dimensional time-dependent model (3-D TDM) and the two-dimensional time-dependent model (2-D TDM) were observed to be identical. The calculated results of the rod’s top shape, obtained by the TDMs, were almost identical to those obtained by the two-dimensional time-independent model (2-D TIM), which means that there exists steady-state rod growth. The effects of spray-forming parameters, such as initial eccentric distance, substrate withdrawal velocity, and spray angle, on the shape-evolution behavior were analyzed in terms of the vertex growth velocity ( G v o ¯ ¯ ¯ ¯ ). The optimum spray-forming condition to minimize transient-state rod growth was also presented. Experimental verification was made to confirm the proposed forming models.-
dc.publisherMetallurgical and materials transactions. A, Physical metallurgy and materials science-
dc.subjectrod-forming model-
dc.subjectspray forming-
dc.subjecttransient growth-
dc.subjectsteady growth-
dc.subjecttime-dependent model-
dc.subjecttime-independent model-
dc.titleFormulation of rod-forming models and their application in spray forming-
dc.typeArticle-
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