Hierarchical {332}&lt;113&gt; twinning in a metastable β Ti-alloy showing tolerance to strain localization

Zhang, J. Y.; Fu, Yangyang; Wu, Yadong; Qian, Bingnan; Chen, Zheng; Inoue, Akihisa; Wu, Yuan; Yang, Yang; Sun, Fan; Li, Ju; Prima, Frédéric

doi:10.1080/21663831.2020.1745920

Cited by 46 publications

(5 citation statements)

References 18 publications

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“…DIC and EBSD evidenced that two specific locations thus seem to concentrate most of the higher strains: the intersection between the twins and the grain boundaries, and the intersection between two twins. The interior of the twins will not be discussed in the following, as secondary mechanisms taking place since they have already been investigated extensively [8,20,[37][38][39][40].…”

Section: Figure 5: A) Ebsd Ipf Image Along the Rolling Direction Of A...mentioning

confidence: 99%

Accommodation mechanisms in strain-transformable titanium alloys

Danard

Martin

Lilensten

et al. 2021

Materials Science and Engineering: A

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Section: Figure 5: A) Ebsd Ipf Image Along the Rolling Direction Of A...mentioning

confidence: 99%

Accommodation mechanisms in strain-transformable titanium alloys

Danard

Martin

Lilensten

et al. 2021

Materials Science and Engineering: A

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“…Two distinguished zones are divided by the M d = RT boundary, where the combined TRIP and TWIP (TRIP/TWIP Ti) are reported to occur (Figure 3a). High-performance TRIP/TWIP Ti alloys have been successfully designed by adjusting the chemical composition to tailor the Bo and Md parameters [4,7,12,13,34,37,41,48,57,59,68,[102][103][104][105][106][107]. As illustrated in Figure 3a, the deformation modes of most designed TRIP/TWIP alloys align with predictions from the Bo-Md map, showing its effectiveness in TRIP/TWIP Ti alloy design.…”

Section: D-electron Theorymentioning

confidence: 84%

“…As for TWIP Ti alloys, there is no significant coarsening of the twin variants, but the continuous formation of twinning variants and internal secondary twinning and tertiary twinning occurs before the dislocation-dominated plastic deformation [14,48]. When the local maximum strain hardening rate is reached in stage II, the initial β matrix is mainly transformed into martensite or twins.…”

Section: Deformation Mechanisms and Strain Hardening Behaviormentioning

confidence: 99%

A Review of Deformation Mechanisms, Compositional Design, and Development of Titanium Alloys with Transformation-Induced Plasticity and Twinning-Induced Plasticity Effects

Fu,

Gao,

Jiang

et al. 2024

Metals

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Metastable β-type Ti alloys that undergo stress-induced martensitic transformation and/or deformation twinning mechanisms have the potential to simultaneously enhance strength and ductility through the transformation-induced plasticity effect (TRIP) and twinning-induced plasticity (TWIP) effect. These TRIP/TWIP Ti alloys represent a new generation of strain hardenable Ti alloys, holding great promise for structural applications. Nonetheless, the relatively low yield strength is the main factor limiting the practical applications of TRIP/TWIP Ti alloys. The intricate interplay among chemical compositions, deformation mechanisms, and mechanical properties in TRIP/TWIP Ti alloys poses a challenge for the development of new TRIP/TWIP Ti alloys. This review delves into the understanding of deformation mechanisms and strain hardening behavior of TRIP/TWIP Ti alloys and summarizes the role of β phase stability, α″ martensite, α′ martensite, and ω phase on the TRIP/TWIP effects. This is followed by the introduction of compositional design strategies that empower the precise design of new TRIP/TWIP Ti alloys through multi-element alloying. Then, the recent development of TRIP/TWIP Ti alloys and the strengthening strategies to enhance their yield strength while preserving high-strain hardening capability are summarized. Finally, future prospects and suggestions for the continued design and development of high-performance TRIP/TWIP Ti alloys are highlighted.

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“…Considering the intricate nature of these mechanisms, researchers have developed and formulated strategies to enhance the strength and plasticity of β-type alloys. For instance, Ren et al [13] and Zhang et al [14] attained a tensile strength exceeding 1.1 GPa and an elongation exceeding 25% by inducing nanoscale twinning during tensile deformation. Similarly, the adjustment of SIMα ′′ can optimize the mechanical properties of titanium alloys.…”

Section: Introductionmentioning

confidence: 99%

Studying Plastic Deformation Mechanism in β-Ti-Nb Alloys by Molecular Dynamic Simulations

Wang,

Huang,

et al. 2024

Metals

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Using molecular dynamics (MD) simulations, the transition of the plastic deformation mechanism of Ti-Nb alloys during the tensile process was studied, and the effects of temperature, Nb composition, and strain rate on the deformation mechanism were also investigated. The results show that the deformation process of Ti-Nb alloys involves defect formation, followed by twinning and ω-phase transition, and ultimately, dislocation slip occurs. The <111>{112} slip makes the ω-phase easily overcome the transition energy barrier, inducing the phase transition in the twinning process. Increasing temperature will enhance the plasticity and reduce the strength of the material, while increasing Nb composition will have the opposite effect on the deformation. The simulations show a competition between twinning and dislocation slip mechanisms. With the increase in Nb content, the plastic deformation mechanism of the alloy will change from twinning to dislocation slip. In addition, the plastic strain range increases with the increase in the deformation rate in Ti-Nb alloys. At a higher strain rate, the alloy’s plastic strain range is affected by various deformation mechanisms, which significantly influence the plasticity of the material. The findings of this study provide further insights into the design of Ti-Nb-based alloys.

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Hierarchical {332}<113> twinning in a metastable β Ti-alloy showing tolerance to strain localization

Cited by 46 publications

References 18 publications

Accommodation mechanisms in strain-transformable titanium alloys

Accommodation mechanisms in strain-transformable titanium alloys

A Review of Deformation Mechanisms, Compositional Design, and Development of Titanium Alloys with Transformation-Induced Plasticity and Twinning-Induced Plasticity Effects

Studying Plastic Deformation Mechanism in β-Ti-Nb Alloys by Molecular Dynamic Simulations

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