Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 신동혁 | - |
dc.date.accessioned | 2020-03-23T05:30:49Z | - |
dc.date.available | 2020-03-23T05:30:49Z | - |
dc.date.issued | 2004-04 | - |
dc.identifier.citation | 대한금속재료학회지, v. 42, No. 4, Page. 320-328 | en_US |
dc.identifier.issn | 1738-8228 | - |
dc.identifier.issn | 2288-8241 | - |
dc.identifier.uri | http://kiss.kstudy.com/thesis/thesis-view.asp?key=2221620 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/139358 | - |
dc.description.abstract | Dynamic deformation and fracture behavior of ultra-fine-grained low-carbon steels fabricated by equal channel angular pressing (ECAP) was investigated in this study. Dynamic torsional tests were conducted on four steel specimens, two of which were annealed after ECAP, using a torsional Kolsky bar, and then the test data were compared via microstructures, tensile properties, and fracture mode. The ECAP`ed specimen consisted of very he, elongated grains of -0.5 μm in size, which were slightly coarsened and had an equiaxed shape after annealing. The dynamic torsional test results indicated that maximum shear stress decreased, while fracture shear strain increased, with increasing annealing time. Some adiabatic shear bands were observed at the gage center of the dynamically deformed torsional specimen, and their width was smaller in the ECAP`ed specimen than in the 1-hr annealed specimen, although they were not found in the 24-hr annealed specimen. Ultra-he, equiaxed grains of 0.05-0.3 μm in size were formed inside the adiabatic shear band, and their boundaries had characteristics of high-angle grain boundaries. These phenomena were explained by dynamic recovery and recrystallization due to the highly localized plastic deformation and temperature rise inside the adiabatic shear band. | en_US |
dc.description.sponsorship | 본 연구는 과학기술부 국가지정연구실 사업의 지원으로 이루어졌으며, 이에 감사드립니다. 또한 ECAP 시편의 제조와 해석에 많은 도움을 주신 한양대학교 금속재료공학과 한수연씨께 감사드립니다. | en_US |
dc.language.iso | ko_KR | en_US |
dc.publisher | 대한금속재료학회 | en_US |
dc.subject | Dynamic torsional test | en_US |
dc.subject | Ultra-fine-grained low-carbon steel | en_US |
dc.subject | Equal channel angular pressing | en_US |
dc.subject | Adiabatic shear band | en_US |
dc.subject | Annealing | en_US |
dc.title | ECAP으로 제조된 초미세립 저탄소강의 동적 변형거동 | en_US |
dc.title.alternative | Dynamic Deformation Behavior of Ultra-Fine-Grained Low-Carbon Steels Fabricated by Equal Channel Angular Pressing | en_US |
dc.type | Article | en_US |
dc.relation.journal | 대한금속·재료학회지 | - |
dc.contributor.googleauthor | 이한상 | - |
dc.contributor.googleauthor | 황병철 | - |
dc.contributor.googleauthor | 이성학 | - |
dc.contributor.googleauthor | 안병두 | - |
dc.contributor.googleauthor | 신동혁 | - |
dc.contributor.googleauthor | 이창길 | - |
dc.relation.code | 2012100286 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF ENGINEERING SCIENCES[E] | - |
dc.sector.department | DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING | - |
dc.identifier.pid | dhshin | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.