Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 541, Issue -, Pages 190-195Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2012.02.021
Keywords
Twinning; Titanium; Dynamic plastic deformation; Electron backscatter diffraction
Categories
Funding
- National Natural Science Foundation of China [51071183, 50890170]
- Fundamental Research Funds for the Central Universities [CDJXS11132225]
- Major State Basic Research Development Program of China (973 Program) [2010CB631004]
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The type of deformation twins in purity titanium after dynamic plastic deformation (DPD) and quasi-static compression (QSC) at room temperature is investigated by electron backscatter diffraction techniques, respectively. DPD with a high strain rate (4.5-5 x 10(2)/s) activates more deformation twins in Ti. Four types of twins have been identified in DPD samples, while three types of twins in QSC samples. The (1 1 (2) over bar 4) twinning is only observed in DPD samples, associating with the {1 1 (2) over bar 2} twinning. The misorientations of {1 1 (2) over bar 2}-{1 1 (2) over bar 4} variant pairs are 12-13 degrees, suggesting they follow the same misorientation profile (0 1 (1) over bar 0) plane and rotated direction. (C) 2012 Elsevier B.V. All rights reserved.
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