DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ryu, Ho Jin | ko |
dc.contributor.author | Hong, Soon-Hyung | ko |
dc.contributor.author | Baek, WH | ko |
dc.date.accessioned | 2007-12-11T05:30:14Z | - |
dc.date.available | 2007-12-11T05:30:14Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2000-10 | - |
dc.identifier.citation | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.291, no.1-2, pp.91 - 96 | - |
dc.identifier.issn | 0921-5093 | - |
dc.identifier.uri | http://hdl.handle.net/10203/2399 | - |
dc.description.abstract | The mechanical properties of solid-state sintered 93W-5.6Ni-1.4Fe tungsten heavy alloys fabricated by mechanical alloying were investigated. Blended W, Ni and Fe powders were mechanically alloyed in a tumbler ball mill at a milling speed of 75 rpm employing a ball-to-powder ratio of 20:1 and a ball filling ratio of 15%. A nanocrystalline size of 16 nm and fine lamellar spacings of 0.2 mu m were obtained in mechanically alloyed powders at a steady state milling stage. Mechanically alloyed powders were consolidated into green compacts and solid-state sintered at 1300 degrees C for 1 h in a hydrogen atmosphere. The alloys sintered from mechanically alloyed powders showed fine tungsten particles (about 3 mu m in diameter) and a relative density above 99%. The volume fraction of the matrix phase was 11% and the tungsten/tungsten contiguity was determined to be 0.74. The alloys exhibited high yield strengths (about 1100 MPa) due to their fine microstructures, but exhibited reduced elongation and impact energy due to a large area fraction of tungsten/tungsten boundaries and the low volume fraction of matrix phase. (C) 2000 Elsevier Science S.A. All rights reserved. | - |
dc.description.sponsorship | Korea Research Foundation | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Microstructure and mechanical properties of mechanically alloyed and solid-state sintered tungsten heavy alloys | - |
dc.type | Article | - |
dc.identifier.wosid | 000089249100013 | - |
dc.identifier.scopusid | 2-s2.0-0034307129 | - |
dc.type.rims | ART | - |
dc.citation.volume | 291 | - |
dc.citation.issue | 1-2 | - |
dc.citation.beginningpage | 91 | - |
dc.citation.endingpage | 96 | - |
dc.citation.publicationname | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | - |
dc.identifier.doi | 10.1016/S0921-5093(00)00968-0 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Ryu, Ho Jin | - |
dc.contributor.localauthor | Hong, Soon-Hyung | - |
dc.contributor.nonIdAuthor | Baek, WH | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | tungsten heavy alloys | - |
dc.subject.keywordAuthor | mechanical alloying | - |
dc.subject.keywordAuthor | solid-state sintering | - |
dc.subject.keywordAuthor | microstructure | - |
dc.subject.keywordAuthor | mechanical properties | - |
dc.subject.keywordPlus | ENERGY PENETRATOR MATERIALS | - |
dc.subject.keywordPlus | STRAIN-RATE | - |
dc.subject.keywordPlus | DEFORMATION | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.subject.keywordPlus | REFINEMENT | - |
dc.subject.keywordPlus | IMPACT | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.