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Grain refining mechanism of Ti during equal channel angular pressing
- Authors
- Kim, Y.-S.; Kim, J.; Kim, I.; Shin, D.H.
- Issue Date
- 2002
- Publisher
- Minerals, Metals and Materials Society
- Keywords
- Deformation structure; ECAP; Slip; TEM; Ti; Twinning
- Citation
- TMS Annual Meeting, pp.99 - 104
- Journal Title
- TMS Annual Meeting
- Start Page
- 99
- End Page
- 104
- ISSN
- 0000-0000
- Abstract
- Microstructural development of titanium during equal-channel angular pressing was investigated to understand the mechanisms of grain refinement and strain accommodation. TEM micrographs of the sample after the first pass showed that {1011} deformation twinning plays a primary role in accommodating the plastic deformation imposed by the pressing. During subsequent passes, plastic deformation was accommodated mainly by dislocations of a slip character on prism planes when processed via route B. The activation of slip system was discussed based on the preferred orientation and the resolved shear stress of each slip mode.
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