Deformation behaviour and mechanisms during hot compression at supertransus temperatures in Ti-10V-2Fe-3Al

Zhao, Juan, Zhong, Jie, Yan, Fei, Chai, Fang and Dargusch, Matthew (2017) Deformation behaviour and mechanisms during hot compression at supertransus temperatures in Ti-10V-2Fe-3Al. Journal of Alloys and Compounds, 710 616-627. doi:10.1016/j.jallcom.2017.03.219


Author Zhao, Juan
Zhong, Jie
Yan, Fei
Chai, Fang
Dargusch, Matthew
Title Deformation behaviour and mechanisms during hot compression at supertransus temperatures in Ti-10V-2Fe-3Al
Journal name Journal of Alloys and Compounds   Check publisher's open access policy
ISSN 0925-8388
1873-4669
Publication date 2017-07-05
Sub-type Article (original research)
DOI 10.1016/j.jallcom.2017.03.219
Open Access Status Not yet assessed
Volume 710
Start page 616
End page 627
Total pages 12
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Collection year 2018
Language eng
Abstract Deformation mechanisms in Ti-10V-2Fe-3Al at above β transus temperatures were studied mainly using Electron backscattered diffraction (EBSD). The volume fraction of dynamic recrystallization is lower than 10% for all test conditions in the single β phase field, showing that the main dynamic restoration mechanism is dynamic recovery. The activation energy was calculated to be 172 kJ/mol, which also supported the dominant role of dynamic recovery. Besides dynamic recovery, continuous dynamic recrystallization (CDRX) by progressive lattice rotation was also observed. When it occurred, the concentration of high Kernel Average Misorientation (KAM) values close to grain boundaries and low KAM values at the grain center was observed. Geometric dynamic recrystallization hardly occurred, as high angle grain boundaries (HAGB) spacing was much larger than subgrain size. Discontinuous dynamic recrystallization (DDRX) was rarely observed.
Keyword Beta titanium
Deformation mechanism
Dynamic recovery
Dynamic recrystallization
EBSD
Ti-10V-2Fe-3Al
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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