DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jeong, SG | ko |
dc.contributor.author | Choi, JH | ko |
dc.contributor.author | Lee, DN | ko |
dc.contributor.author | Lee, HyuckMo | ko |
dc.contributor.author | Hong, SH | ko |
dc.contributor.author | Hong, SS | ko |
dc.contributor.author | Lee, JS | ko |
dc.date.accessioned | 2013-02-24T11:06:37Z | - |
dc.date.available | 2013-02-24T11:06:37Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1991-04 | - |
dc.identifier.citation | JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS, v.29, no.4, pp.379 - 388 | - |
dc.identifier.issn | 1738-8228 | - |
dc.identifier.uri | http://hdl.handle.net/10203/56705 | - |
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 | English | - |
dc.publisher | KOREAN INST METALS MATERIALS | - |
dc.title | Blow forming of superplastic 7475 Al Alloy sheets | - |
dc.title.alternative | 초소성 7475 Al 합금판의 부풀림 성형 | - |
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 | JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS | - |
dc.contributor.localauthor | Lee, HyuckMo | - |
dc.contributor.nonIdAuthor | Jeong, SG | - |
dc.contributor.nonIdAuthor | Choi, JH | - |
dc.contributor.nonIdAuthor | Lee, DN | - |
dc.contributor.nonIdAuthor | Hong, SH | - |
dc.contributor.nonIdAuthor | Hong, SS | - |
dc.contributor.nonIdAuthor | Lee, JS | - |
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