A review on deformation mechanisms of metastable β titanium alloys

Over the past few decades, titanium (Ti) alloys containing fully or mostly body-centred cubic β phase in metastable state have received considerable interest due to their elevated strength with remarkable ductility. Apart from dislocation slip, the plastic deformation of metastable β Ti alloys invol...

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Bibliographic Details
Published inJournal of materials science Vol. 59; no. 32; pp. 14981 - 15016
Main Authors Cao, M. Z., He, B. B.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2024
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Deformation
Deformation effects
Deformation mechanisms
Materials Science
Mechanical properties
Mechanical twinning
Metastable state
Phase transitions
Plastic deformation
Plastic properties
Polymer Sciences
Review
Solid Mechanics
Titanium alloys
Titanium base alloys
Work hardening
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Summary:Over the past few decades, titanium (Ti) alloys containing fully or mostly body-centred cubic β phase in metastable state have received considerable interest due to their elevated strength with remarkable ductility. Apart from dislocation slip, the plastic deformation of metastable β Ti alloys involves either twinning-induced plasticity (TWIP), transformation-induced plasticity (TRIP), or the complex coupling of both (TWIP/TRIP). The pursuance of better mechanical performance necessitates the fundamental understanding of these various deformation mechanisms and has driven substantial studies. Therefore, the present work reviews recent research on the mechanical behaviour of TWIP and/or TRIP metastable β Ti alloys, with special emphasis on the role of different plasticity modes in enhancing work hardening. The effective inhibition to dislocation slip produced by deformation-induced twins and phases which gives rise to the dynamic Hall–Petch effect is discussed in detail since it underpins the TWIP/TRIP engineering. In particular, the correlation between deformation twinning and stress-induced phase transformation is well addressed. It is expected that such review may shed light on the underlying physics of the intricate deformation behaviour of metastable β Ti alloys and inspire more studies in designing novel Ti alloys with superior mechanical properties. Graphical Abstract
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-024-10063-2