Phase kinetics modelling of titanium alloys undergoing plasticity induced transformation
Phase kinetics modelling of titanium alloys undergoing plasticity induced transformation
A model to predict the kinetics of α+β → β and β → α+β reactions in titanium alloys undergoing Plasticity Induced Transformation (PiTTi) is presented. The approach employs the local equilibrium assumption at the interface and can be applied to ternary and higher order systems. Rigorous thermodynamic equilibrium is ensured by coupling the multi-component diffusion computations to Thermo-calc databases. The model provides the transformed volume fraction and phase concentrations for a variety of heat treatment conditions. The variations in the concentration of β phase are employed to predict its ability to transform into martensite employing a modified version of the theory of Ghosh and Olson for martensite nucleation, [Acta. Met. Vol. 42, pp. 3361, 1994]. The computed optimum heat treatment schedules leading to PiTTi are presented for Ti-10V-2Fe-3Al (wt.%).
ductility, heat treatment, microstructure, PiTTi, strength, Ti-1023
479-482
Japan Institute of Metals
Rivera-Diaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Di Napoli, Paolo
153dc4ea-9d82-485c-ae44-ab6a0f39d725
Neelakantan, Suresh
54f12c77-36a8-4bd0-8940-eb3657a5f750
van der Zwaag, Sybrand
ad11f134-8a43-4635-9feb-7c3d01158f4b
2007
Rivera-Diaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Di Napoli, Paolo
153dc4ea-9d82-485c-ae44-ab6a0f39d725
Neelakantan, Suresh
54f12c77-36a8-4bd0-8940-eb3657a5f750
van der Zwaag, Sybrand
ad11f134-8a43-4635-9feb-7c3d01158f4b
Rivera-Diaz-del-Castillo, Pedro E.J., Di Napoli, Paolo, Neelakantan, Suresh and van der Zwaag, Sybrand
(2007)
Phase kinetics modelling of titanium alloys undergoing plasticity induced transformation.
Niinomi, M., Akiyama, S., Ikeda, M., Hagiwara, M. and Maruyama, K.
(eds.)
In Ti-2007 - Proceedings of the 11th World Conference on Titanium.
vol. 1,
Japan Institute of Metals.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A model to predict the kinetics of α+β → β and β → α+β reactions in titanium alloys undergoing Plasticity Induced Transformation (PiTTi) is presented. The approach employs the local equilibrium assumption at the interface and can be applied to ternary and higher order systems. Rigorous thermodynamic equilibrium is ensured by coupling the multi-component diffusion computations to Thermo-calc databases. The model provides the transformed volume fraction and phase concentrations for a variety of heat treatment conditions. The variations in the concentration of β phase are employed to predict its ability to transform into martensite employing a modified version of the theory of Ghosh and Olson for martensite nucleation, [Acta. Met. Vol. 42, pp. 3361, 1994]. The computed optimum heat treatment schedules leading to PiTTi are presented for Ti-10V-2Fe-3Al (wt.%).
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Published date: 2007
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Publisher Copyright:
© Ti-2007 - Proceedings of the 11th World Conference on Titanium. All Rights Reserved.
Venue - Dates:
11th World Conference on Titanium, Ti-2007, , Kyoto, Japan, 2007-06-03 - 2007-06-07
Keywords:
ductility, heat treatment, microstructure, PiTTi, strength, Ti-1023
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Local EPrints ID: 492954
URI: http://eprints.soton.ac.uk/id/eprint/492954
PURE UUID: 32c4b9e8-0410-4bd7-afde-9f2c1134ea51
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Date deposited: 21 Aug 2024 17:03
Last modified: 22 Aug 2024 02:07
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Contributors
Author:
Pedro E.J. Rivera-Diaz-del-Castillo
Author:
Paolo Di Napoli
Author:
Suresh Neelakantan
Author:
Sybrand van der Zwaag
Editor:
M. Niinomi
Editor:
S. Akiyama
Editor:
M. Ikeda
Editor:
M. Hagiwara
Editor:
K. Maruyama
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