DC Field | Value | Language |
---|---|---|
dc.contributor.author | 정성규 | ko |
dc.contributor.author | 최준환 | ko |
dc.contributor.author | 이동녕 | ko |
dc.contributor.author | 이혁모 | ko |
dc.contributor.author | 홍순형 | ko |
dc.contributor.author | 홍성석 | ko |
dc.contributor.author | 이종수 | ko |
dc.date.accessioned | 2013-02-27T07:41:25Z | - |
dc.date.available | 2013-02-27T07:41:25Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1991-01 | - |
dc.identifier.citation | 대한금속·재료학회지, v.29, no.4, pp.379 - 388 | - |
dc.identifier.issn | 1738-8228 | - |
dc.identifier.uri | http://hdl.handle.net/10203/67302 | - |
dc.description.abstract | The 7475 aluminum alloy sheets were subjected to a thermornechanical treatment to have superplastic characteristics. The superplastic specimens were tested in an Instron testing machine at constant cross head speeds to obtain a constitutive equation for an optimum superplasticity. The constitutive equation which offers the reference data for a constant-apex-strain-rate blow forming was established at 516℃ in the form of 0=K·ε˙^m. The equation was applied to the analyses of blow forming into cylinderical and conical dies. The theoretical models mainly followed Ragab`s analytic model about a constant-pressure blow forming but were modified into the models relevant to a constant-apex-strain-rate blow forming. A number of experiment have been conducted, involving the blow forming of superplastic 7475 Al alloy sheets into cylinderical and conical dies at 516℃ with the apex-strain-rate, 1.15 × 10^(-3)/sec. The theoretical results and experiments were compared and the problems such as cavity occurrence and dynamic grain growth were discussed. | - |
dc.language | Korean | - |
dc.publisher | 대한금속·재료학회 | - |
dc.title | 초소성 7475 Al합금판의 부풀림 성형 | - |
dc.title.alternative | Blow Forming of Superplastic 7475 Aluminium Alloy Sheets | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.citation.volume | 29 | - |
dc.citation.issue | 4 | - |
dc.citation.beginningpage | 379 | - |
dc.citation.endingpage | 388 | - |
dc.citation.publicationname | 대한금속·재료학회지 | - |
dc.contributor.localauthor | 홍순형 | - |
dc.contributor.nonIdAuthor | 정성규 | - |
dc.contributor.nonIdAuthor | 최준환 | - |
dc.contributor.nonIdAuthor | 이동녕 | - |
dc.contributor.nonIdAuthor | 이혁모 | - |
dc.contributor.nonIdAuthor | 홍성석 | - |
dc.contributor.nonIdAuthor | 이종수 | - |
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