Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 476, Issue 1-2, Pages 98-105Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2007.04.069
Keywords
pure titanium; severe plastic deformation; strength and ductility; thermostability; ECAP plus post-deformation; TEM
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Ultrafine-grained (UFG) sheets of commercially pure (CP)-Ti were produced by equal channel angular pressing (ECAP), by ECAP plus subsequent rolling as a post-deformation and, for comparison, by rolling only, from coarse-grained (CG) billets. It was found that post-deformation of ECAPed CP-Ti by rolling achieves a higher strength with still considerable ductility, and a higher thermal stability compared with the sample's properties after ECAP deformation and/or rolling solely. Transmission electron microscopy investigations revealed that the post-deformed material has a finer and much more homogeneous microstructure than the rolled CG material. Besides, it was shown that the workability of ECAPed Ti depends on the purity. (C) 2007 Elsevier B.V. All rights reserved.
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