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Microstructure and mechanical properties of pure Ti processed by high-ratio differential speed rolling at room temperature
- Authors
- Kim, W. J.; Yoo, S. J.; Lee, J. B.
- Issue Date
- Apr-2010
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Cold working; Severe plastic deformation (SPD); Titanium; Grain refining; Texture
- Citation
- SCRIPTA MATERIALIA, v.62, no.7, pp.451 - 454
- Journal Title
- SCRIPTA MATERIALIA
- Volume
- 62
- Number
- 7
- Start Page
- 451
- End Page
- 454
- ISSN
- 1359-6462
- Abstract
- High-strength Ti sheets could be fabricated by effective grain-refinement through high-ratio differential speed rolling for a thickness reduction of 63% in a single rolling pass at room temperature. Formation of narrowly spaced shear bands distributed uniformly over the entire thickness section of the sheet and a high temperature rise by intensive shear banding during rolling resulted in the formation of ultrafine grains with the size of 0.1-0.3 mu m. The rolled Ti sheet exhibited an ultimate tensile strength of 895-915 MPa. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Related Researcher
- Kim, Woo Jin
- Graduate School (Department of Materials Science and Engineering)