Microstructural influence on low-temperature superplasticity of ultrafine-grained Ti-6Al-4V alloy
SCIE
SCOPUS
- Title
- Microstructural influence on low-temperature superplasticity of ultrafine-grained Ti-6Al-4V alloy
- Authors
- Ko, YG; Kim, WG; Lee, CS; Shin, DH
- Date Issued
- 2005-11-25
- Publisher
- ELSEVIER SCIENCE SA
- Abstract
- Microstructural influence on low-temperature superplastic behavior of ultrafine-grained Ti-6Al-4V alloy fabricated by equal channel angular pressing (ECAP) was investigated. The deformed structures were analyzed with the increment of strain by transmission electron microscopy. Also, a series of tensile tests were carried out on ultrafine-grained (UFG) samples to measure elongation at temperature of 973 K and at strain rates of 10(-4) to 10(-2) s(-1). The results indicated that elongation was significantly increased with increasing ECAP straining from 4 to 8 revealing more high-angle grain boundaries. Deformation mechanisms for UFG structure were analyzed in the context of inelastic deformation theory, which consisted of dislocation glide and grain boundary sliding. (c) 2005 Elsevier B.V. All rights reserved.
- Keywords
- Ti-6Al-4V alloy; equal channel angular pressing; low-temperature superplasticity; inelastic deformation theory; SEVERE PLASTIC-DEFORMATION; BEHAVIOR
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/24271
- DOI
- 10.1016/j.msea.2005.08.080
- ISSN
- 0921-5093
- Article Type
- Article
- Citation
- MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol. 410, page. 156 - 159, 2005-11-25
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.