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Hollow cone high-pressure torsion: Microstructure and tensile strength by unique severe plastic deformation SCIE SCOPUS
- Title
- Hollow cone high-pressure torsion: Microstructure and tensile strength by unique severe plastic deformation
- Authors
- Ho Yong Um; Eun Yoo Yoon; Dong Jun Lee; Lee, CS; Lee Ju Park; Lee, S; Kim, HS
- Date Issued
- 2014-01-15
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- Hollow cone high-pressure torsion (HC-HPT) is proposed as a new severe plastic deformation to produce ultrafine-grained (UFG)/nanocrystalline microstructure materials. UFG Cu with an average grain size of 550 nm and well-developed high-angle grain boundary after HC-HPT of only 1 turn of torsion exhibited a high tensile strength of 414 MPa and a fracture elongation of 25%. A higher plastic deformation in the inner region, the unique deformation mode of HC-HPT, was analyzed using the finite element method. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
- Keywords
- Severe plastic deformation (SPD); High-pressure torsion; Ultrafine grained microstructure; Tension test; Finite element analysis; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; PURE COPPER; CU; PRINCIPLES; DUCTILITY
- ISSN
- 1359-6462
- Article Type
- Article
- Citation
- SCRIPTA MATERIALIA, vol. 71, page. 41 - 44, 2014-01-15
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Related Researcher
- 이성학LEE, SUNG HAK
- Dept of Materials Science & Enginrg