Title
Hardening in relation with microstructure evolution of high purity <tex>$\alpha$</tex>-titanium deformed under monotonic and cyclic simple shear loadings at room temperatureHardening in relation with microstructure evolution of high purity <tex>$\alpha$</tex>-titanium deformed under monotonic and cyclic simple shear loadings at room temperature
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Electron microscopy for materials research (EMAT)
Publication type
article
Publication
Lausanne,
Subject
Physics
Engineering sciences. Technology
Source (journal)
Materials science and engineering: part A: structural materials: properties, microstructure and processing. - Lausanne
Volume/pages
535(2012), p. 12-21
ISSN
0921-5093
ISI
000301402400003
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The aim of this paper is to gain understanding of the quasi-static, large strain deformation behavior at room-temperature of high-purity alpha-Ti with an initial split-basal texture. Simple shear tests were conducted along different directions in order to quantify the material's anisotropy and hardening evolution for different strain paths such as monotonic, Bauschinger, and cyclic loadings. The stress-strain curves indicate that the material displays strong anisotropy in the flow behavior. In order to capture the link between microstructure evolution (occurrence of twinning, grain size evolution, etc.) and the macroscopic response, a thoroughly detailed multi-scale characterization using scanning electron microscope (SEM) observations and electron backscattered diffraction (EBSD) analysis was also conducted. Specifically, EBSD analyses indicate that the twin activity and grain fragmentation are responsible for the observed difference between the macroscopic hardening rates corresponding to different directions and loading paths. (C) 2011 Elsevier B.V. All rights reserved.
E-info
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