Studies on single and duplex aging of metastable beta titanium alloy Ti–15V–3Cr–3Al–3Sn

Santhosh, R.; Manivasagam, Geetha; Saxena, Vikas; Nageswararao, M. M.

doi:10.1016/j.jallcom.2014.03.183

Cited by 96 publications

(23 citation statements)

References 8 publications

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“…Two-step aging of the Ti-15V-3Al-3Cr-3Sn (wt. %) alloy by Santhosh et al, led to higher strengths and hardness compared to isothermal aging, which was caused by a finer dispersion and higher number density of α-phase precipitates [145]. The authors also demonstrated that duplex aging of this alloy led to a four or five times increase of the high cycle fatigue strength [146].…”

Section: Stress-induced Transformationsmentioning

confidence: 94%

A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

494

175

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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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Section: Stress-induced Transformationsmentioning

confidence: 94%

A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

494

175

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“…They are usually enhanced by precipitations of ω and α using aging treatment [4]. A number of work on microstructure evolution and age hardening on beta titanium alloys have been performed to evaluate the microstructure/property relationship, such as Ti-10V-2Fe-3Al [5][6][7], Ti-3Al-8V-6Cr-4Mo-4Zr (Beta-C) [8], Ti-11.5Mo-6Zr-4.5Sn (Beta III) [9][10][11], Ti-15V-3Cr-3Sn-3Al [12][13][14][15][16], Ti-6.8Mo-4.5Fe-1.5Al (Timetal LCB) [17][18][19][20], and more recently, Ti-5Al-5Mo-5V-3Cr (Ti-5553) [21][22][23][24][25][26]. Previous work suggests that the strength level of beta titanium alloy is generally controlled by the distribution, size and volume fraction of ω and/or α precipitates, depending on aging temperatures and time; while the ductility is determined by not only the grain size of prior β phase, but also the morphology and distribution of primary α phase [27,28].…”

Section: Introductionmentioning

confidence: 99%

Microstructural evolution and age hardening behavior of a new metastable beta Ti–2Al–9.2Mo–2Fe alloy

et al. 2015

Materials Science and Engineering: A

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“…Dual-step aging or duplex aging unlocks the room for further betterment in the mechanical properties through finer and homogeneous α precipitation compared to single-step aging. Many researchers have reported the advantage of duplex aging over single-step aging of beta Ti alloys; most studied is the low-high combination, that is, a low temperature for first step aging and a somewhat higher temperature for second step aging [31][32][33][34][35]. Enhancement of the material behavior during unidirectional and cyclic/fatigue loading could be achieved through duplex aging.…”

Section: Duplex Agingmentioning

confidence: 99%

Heat Treatment of Metastable Beta Titanium Alloys

Soundararajan¹,

Vishnu²,

Manivasagam³

et al. 2021

Welding - Modern Topics

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Heat treatment of metastable beta titanium alloys involves essentially two steps-solution treatment in beta or alpha+beta phase field and aging at appropriate lower temperatures. High strength in beta titanium alloys can be developed via solution treatment followed by aging by precipitating fine alpha (α) particles in a beta (β) matrix. Volume fraction and morphology of α determine the strength whereas ductility is dependent on the β grain size. Solution treatment in (α + β) range can give rise to a better combination of mechanical properties, compared to solution treatment in the β range. However, aging at some temperatures may lead to a low/nil-ductility situation and this has to be taken into account while designing the aging step. Heating rate to aging temperature also has a significant effect on the microstructure and mechanical properties obtained after aging. In addition to α, formation of intermediate phases such as omega, beta prime during decomposition of beta phase has been a subject of detailed studies. In addition to covering these issues, the review pays special attention to heat treatment of beta titanium alloys for biomedical applications, in view of the growing interest this class of alloys have been receiving.

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Studies on single and duplex aging of metastable beta titanium alloy Ti–15V–3Cr–3Al–3Sn

Cited by 96 publications

References 8 publications

A Review of Metastable Beta Titanium Alloys

A Review of Metastable Beta Titanium Alloys

Microstructural evolution and age hardening behavior of a new metastable beta Ti–2Al–9.2Mo–2Fe alloy

Heat Treatment of Metastable Beta Titanium Alloys

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