Influence of phase transformation kinetics on the formation of α in a β-quenched Ti–5Al–5Mo–5V–3Cr–1Zr alloy

Barriobero-Vila, Pere; Requena, Guillermo; Schwarz, Sabine; Warchomicka, Fernando; Buslaps, T.

doi:10.1016/j.actamat.2015.05.008

Cited by 109 publications

(77 citation statements)

References 68 publications

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“…%) alloy [141] and the near-beta Ti-5Al-5Mo-5V-3Cr-1Zr (wt. %) alloy [142]. In the case of the Ti-10V-2Fe-3Al (wt.…”

Section: Agingmentioning

confidence: 99%

“…Similar experiments showed that in the Ti-5Al-5Mo-5V-3Cr-1Zr (wt. %) alloy [142], initial microstructure consists of athermal ω-phase particles along dislocation lines and in domains associated with decomposition of the β-phase matrix. For this alloy, the stable α-phase forms at temperatures between approximately 600 • C (1112 • F) and 650 • C (1202 • F) by decomposition of the β-phase and heterogeneous nucleation at grain boundaries or by transformation of the isothermal α -martensite phase.…”

Section: Agingmentioning

confidence: 99%

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A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

430

171

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Abstract:In this article, we provide a broad and extensive review of beta titanium alloys. Beta titanium alloys are an important class of alloys that have found use in demanding applications such as aircraft structures and engines, and orthopedic and orthodontic implants. Their high strength, good corrosion resistance, excellent biocompatibility, and ease of fabrication provide significant advantages compared to other high performance alloys. The body-centered cubic (bcc) β-phase is metastable at temperatures below the beta transus temperature, providing these alloys with a wide range of microstructures and mechanical properties through processing and heat treatment. One attribute important for biomedical applications is the ability to adjust the modulus of elasticity through alloying and altering phase volume fractions. Furthermore, since these alloys are metastable, they experience stress-induced transformations in response to deformation. The attributes of these alloys make them the subject of many recent studies. In addition, researchers are pursuing development of new metastable and near-beta Ti alloys for advanced applications. In this article, we review several important topics of these alloys including phase stability, development history, thermo-mechanical processing and heat treatment, and stress-induced transformations. In addition, we address recent developments in new alloys, phase stability, superelasticity, and additive manufacturing.

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“…%) alloy [141] and the near-beta Ti-5Al-5Mo-5V-3Cr-1Zr (wt. %) alloy [142]. In the case of the Ti-10V-2Fe-3Al (wt.…”

Section: Agingmentioning

confidence: 99%

Section: Agingmentioning

confidence: 99%

A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

430

171

View full text Add to dashboard Cite

show abstract

“…Structure instability of the phase has also been a topic attracting attention (Nag et al, 2011;Bennett et al, 2015;Zheng et al, 2016;Abdel-Hady et al, 2007;Ng et al, 2011;Barriobero-Vila et al, 2015;Li et al, 2016;Williams et al, 1971;Sukedai et al, 1997). Atomic scaled lattice modulations have been revealed in some binary and ternary Ti-Nb (Tahara et al, 2011;Zheng et al, 2016) and Ti-Mo (Nag et al, 2011;Devaraj et al, 2012) alloys through examining the diffuse streaks in TEM SAED patterns and the atomic correspondences in highresolution TEM.…”

Section: Introductionmentioning

confidence: 99%

The origin of striation in the metastable β phase of titanium alloys observed by transmission electron microscopy

Fan

Zhang

et al. 2017

J Appl Cryst

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For the phase of Ti-5553-type metastable -Ti alloys, striations in transmission electron microscopy (TEM) bright-and dark-field images have been frequently observed but their origin has not been sufficiently investigated. In the present work, this phenomenon is studied in depth from the macroscopic scale by neutron diffraction to the atomic scale by high-resolution TEM. The results reveal that the phase contains homogeneously distributed modulated structures, intermediate between that of the phase (cubic) and that of the phase or the ! phase (hexagonal), giving rise to the appearance of additional diffraction spots at 1/2, 1/3 and 2/3 diffraction positions. The intermediate structure between and is formed by the atomic displacements on each second {110} plane in the h110i direction, whereas that between and ! is formed by atomic displacements on each second and third {112} plane in the opposite h111i direction. Because of these atomic displacements, the {110} and {112} planes become faulted, resulting in the streaking of diffraction spots and the formation of extinction fringes in TEM bright-and dark-field images, the commonly observed striations. The present work reveals the origin of the striations and the intrinsic correlation with the additional electron reflections of the phase.

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“…Dessa maneira, desenvolveu-se a partir da pioneira russa VT-22 (Ti-6Al-5V-5-Mo-1Cr-1Fe) [4] a também β-metaestável Ti-5Al-5Mo-5V-3Cr-1Zr (Ti-55531), relativamente nova no mercado e relevante por apresentar uma ampla janela de processamento termomecânico, a partir da qual é possível alcançar melhorias consideráveis em suas propriedades mecânicas [5][6][7]. Por ampla janela de processamento entende-se que esta liga é menos sensível a variações térmicas e à taxa de deformação que, por exemplo, a largamente empregada Ti-10-2-3 [5].…”

Section: Introdução E Justificativasunclassified

“…Por ampla janela de processamento entende-se que esta liga é menos sensível a variações térmicas e à taxa de deformação que, por exemplo, a largamente empregada Ti-10-2-3 [5].…”

Section: Introdução E Justificativasunclassified

Estudo <i>in situ</i> da solubilização e do envelhecimento da liga β-metaestável Ti-5Al-5Mo-5V-3Cr-1Zr usando difração de raio-X com luz síncrotron de alta energia

Guimarães¹

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Estudo in-situ da solubilização e do envelhecimento da liga β-metaestável Ti-5Al-5Mo-5V-3Cr-1Zr usando difração de raio-x com luz síncrotron de alta energia RAFAEL PAIOTTI MARCONDES GUIMARÃES São Carlos RAFAEL PAIOTTI MARCONDES GUIMARÃESEstudo in-situ da solubilização e do envelhecimento da liga β-metaestável Ti-5Al-5Mo-5V-3Cr-1Zr usando difração de raio-x com luz síncrotron de alta energia Recently introduced, the new Ti-55531 titanium based alloy has been developed aiming structural applications such as the automotive and aerospace ones. The present Thesis is focused on the assessment of Ti-55531 alloy in situ solid state transformations during ageing at different temperatures as well as initial conditions. In this sense, the study emphasis will deal with both quantitative and qualitative analysis of the main constitutive phases found in the alloy, namely the body-centered cubic β, both hexagonal α and ω and the martensitic α", this one orthorhombic, by means of Rietveld refinement. Concerning the data, it was obtained by high energy x-ray diffraction (HEXRD) technique in a synchrotron light source facility. All the Debye-Scherrer rings resulting from these in situ experiments were analyzed by both FIT2Dand MAUD software.

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Influence of phase transformation kinetics on the formation of α in a β-quenched Ti–5Al–5Mo–5V–3Cr–1Zr alloy

Cited by 109 publications

References 68 publications

A Review of Metastable Beta Titanium Alloys

A Review of Metastable Beta Titanium Alloys

The origin of striation in the metastable β phase of titanium alloys observed by transmission electron microscopy

Estudo <i>in situ</i> da solubilização e do envelhecimento da liga β-metaestável Ti-5Al-5Mo-5V-3Cr-1Zr usando difração de raio-X com luz síncrotron de alta energia

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Influence of phase transformation kinetics on the formation of α in a β-quenched Ti–5Al–5Mo–5V–3Cr–1Zr alloy

Cited by 109 publications

References 68 publications

A Review of Metastable Beta Titanium Alloys

A Review of Metastable Beta Titanium Alloys

The origin of striation in the metastable β phase of titanium alloys observed by transmission electron microscopy

Estudo <i>in situ</i> da solubilização e do envelhecimento da liga &beta;-metaestável Ti-5Al-5Mo-5V-3Cr-1Zr usando difração de raio-X com luz síncrotron de alta energia

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Estudo <i>in situ</i> da solubilização e do envelhecimento da liga β-metaestável Ti-5Al-5Mo-5V-3Cr-1Zr usando difração de raio-X com luz síncrotron de alta energia