Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 신동혁 | - |
dc.date.accessioned | 2019-11-01T02:32:27Z | - |
dc.date.available | 2019-11-01T02:32:27Z | - |
dc.date.issued | 2005-11 | - |
dc.identifier.citation | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v. 36A, No. 11, Page. 2947-2955 | en_US |
dc.identifier.issn | 1073-5623 | - |
dc.identifier.issn | 1543-1940 | - |
dc.identifier.uri | https://link.springer.com/article/10.1007/s11661-005-0068-5 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/111742 | - |
dc.description.abstract | In the present study, ultrafine-grained microstructures of a conventional 5083 aluminum alloy were fabricated by equal-channel angular pressing, and their dynamic deformation and fracture behavior were investigated. Dynamic torsional tests were conducted on four aluminum alloy specimens using a torsional Kolsky bar, and then the test data were analyzed in relation to microstructures, tensile properties, and adiabatic shear-banding behavior. The equal-channel angular-pressed (ECAP) specimens consisted of ultrafine grains and contained a considerable amount of second-phase particles, which were refined and distributed homogeneously in the matrix as the equal-channel angular pressing pass number increased. The dynamic torsional test results indicated that the maximum shear stress increased, while the fracture shear strain remained constant, with increasing equal-channel angular pressing pass number. Observation of the deformed area beneath the dynamically fractured surface showed that a number of voids initiated mainly at second-phase particle/matrix interfaces and that the number of voids increased with increasing pass number. Adiabatic shear bands of 200 to <300 mu m in width were formed in the as-extruded and 1-pass ECAP specimens having coarser particles, whereas they were hardly formed in the four-pass and eight-pass ECAP specimens having finer particles. The possibility of adiabatic shear-band formation was explained by concepts of absorbed deformation energy and void initiation. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | MINERALS METALS MATERIALS SOC | en_US |
dc.subject | Material Transaction | en_US |
dc.subject | Maximum Shear Stress | en_US |
dc.subject | Adiabatic Shear | en_US |
dc.subject | Void Initiation | en_US |
dc.subject | Torsional Specimen | en_US |
dc.title | Dynamic Deformation and Fracture Behavior of Ultrafine-Grained Aluminum Alloy Fabricated by Equal-Channel Angular Pressing | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1007/s11661-005-0068-5 | - |
dc.relation.journal | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND | - |
dc.contributor.googleauthor | Kim, YG | - |
dc.contributor.googleauthor | Hwang, B | - |
dc.contributor.googleauthor | Lee, S | - |
dc.contributor.googleauthor | Kim, WG | - |
dc.contributor.googleauthor | Shin, DH | - |
dc.relation.code | 2012206650 | - |
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.