Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 214, Issue 7, Pages 1307-1315Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2014.02.015
Keywords
Grade 2 titanium; Severe plastic deformation; UFG microstructure; Strength; Ductility
Funding
- Hungarian Scientific Research Fund, OTKA [K-100500, 109021]
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The mechanical properties and the microstructure of Grade 2 titanium semi-products processed by warm caliber rolling in both laboratory and industrial environments are studied. It is shown that this technology yields ultrafine-grained (UFG) microstructure with high tensile strength and good ductility at room temperature. Finite element modelling (FEM) suggests that the effectiveness of caliber rolling in grain refinement is mainly caused by the large, homogeneous imposed strain, similar to conventional severe plastic deformation (SPD) methods. It is proved that the mechanical and microstructural properties of titanium processed by the industrial equipment are similar to the characteristics of the material manufactured in the laboratory. This observation suggests that caliber rolling carried out in industrial environments may be a candidate technology in mass-production of UFG titanium with improved mechanical properties. (C) 2014 Elsevier B.V. All rights reserved.
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