Martensite formation in titanium alloys: crystallographic and compositional effects
Martensite formation in titanium alloys: crystallographic and compositional effects
An explanation is proposed to martensite inhibition beyond characteristic concentration thresholds in titanium binary alloys. The method combines the phenomenological theory of martensite crystallography (PTMC) and thermodynamic calculations (TCs) to describe the conditions under which martensite formation is favourable. It is shown that martensite can be crystallographically prevented while being thermodynamically favourable. The PTMC is implemented by taking into account the influence of composition. After a comprehensive comparison to experiments, two twinning systems and two glide systems are inferred to be able to produce the lattice invariant shear. The critical concentrations above which martensite cannot form are computed and compared to experimental results on binary and ternary systems, showing good agreement. The proposed method may be used as a guide to design titanium alloys for controlled martensitic behaviour.
Martensite, Phenomenological theory of martensitic transformation, Superelasticity, Titanium, Transformation induced plasticity
Bignon, Madeleine
2e0d9953-ed11-4d2b-a928-bd2caa241e04
Bertrand, Emmanuel
a6e4c98a-9dd8-40c7-b167-07a90eaf3251
Rivera-Díaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Tancret, Franck
63962367-3fff-4cfc-a86c-e56a9fb962d2
5 April 2021
Bignon, Madeleine
2e0d9953-ed11-4d2b-a928-bd2caa241e04
Bertrand, Emmanuel
a6e4c98a-9dd8-40c7-b167-07a90eaf3251
Rivera-Díaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Tancret, Franck
63962367-3fff-4cfc-a86c-e56a9fb962d2
Bignon, Madeleine, Bertrand, Emmanuel, Rivera-Díaz-del-Castillo, Pedro E.J. and Tancret, Franck
(2021)
Martensite formation in titanium alloys: crystallographic and compositional effects.
Journal of Alloys and Compounds, 872, [159636].
(doi:10.1016/j.jallcom.2021.159636).
Abstract
An explanation is proposed to martensite inhibition beyond characteristic concentration thresholds in titanium binary alloys. The method combines the phenomenological theory of martensite crystallography (PTMC) and thermodynamic calculations (TCs) to describe the conditions under which martensite formation is favourable. It is shown that martensite can be crystallographically prevented while being thermodynamically favourable. The PTMC is implemented by taking into account the influence of composition. After a comprehensive comparison to experiments, two twinning systems and two glide systems are inferred to be able to produce the lattice invariant shear. The critical concentrations above which martensite cannot form are computed and compared to experimental results on binary and ternary systems, showing good agreement. The proposed method may be used as a guide to design titanium alloys for controlled martensitic behaviour.
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Accepted/In Press date: 20 March 2021
e-pub ahead of print date: 26 March 2021
Published date: 5 April 2021
Keywords:
Martensite, Phenomenological theory of martensitic transformation, Superelasticity, Titanium, Transformation induced plasticity
Identifiers
Local EPrints ID: 492235
URI: http://eprints.soton.ac.uk/id/eprint/492235
ISSN: 0925-8388
PURE UUID: fc0206cb-43c7-444c-9088-f448217a2060
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Date deposited: 22 Jul 2024 17:00
Last modified: 23 Jul 2024 02:08
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Contributors
Author:
Madeleine Bignon
Author:
Emmanuel Bertrand
Author:
Pedro E.J. Rivera-Díaz-del-Castillo
Author:
Franck Tancret
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