Microstructure development during equal-channel angular pressing of titanium
- Authors
- Shin, DH; Kim, I; Kim, J; Kim, YS; Semiatin, SL
- Issue Date
- Feb-2003
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- equal-channel angular pressing; titanium; twinning; slip; TEM
- Citation
- ACTA MATERIALIA, v.51, no.4, pp.983 - 996
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACTA MATERIALIA
- Volume
- 51
- Number
- 4
- Start Page
- 983
- End Page
- 996
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/46719
- DOI
- 10.1016/S1359-6454(02)00501-3
- ISSN
- 1359-6454
- Abstract
- The development of microstructure during equal-channel angular pressing (ECAP) of commercial-purity titanium was investigated to establish the mechanisms of grain refinement and strain accommodation. Samples were deformed at 623 K via three different processing routes: A, B, and C. After the first pass, transmission electron microscopy (TEM) revealed that the strain imposed by pressing was accommodated mainly by {10 (1) over bar1} deformation twinning. During the second pass, the deformation mechanism changed to dislocation slip on a system which depended on the specific route. For route C, prism (a) and pyramidal (c + a) slip occurred within alternating twin bands. For route B, prism a slip was the main deformation mechanism. For route A, deformation was controlled by basal a slip and micro-twinning in alternating twin bands. The variation in deformation behavior was interpreted in terms of the texture formed during the first pass and the Schmid factors for slip during subsequent deformation. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.