The influence of β phase stability on deformation mode and compressive mechanical properties of Ti–10V–3Fe–3Al alloy

Ahmed, Mansur; Wexler, David; Casillas, Gilberto; Ивасишин, О. М.; Pereloma, Elena V.

doi:10.1016/j.actamat.2014.10.043

Cited by 199 publications

(100 citation statements)

References 40 publications

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“…Recently, an important work by Ahmed et al, studied the influence of β-phase stability on the deformation mechanisms in the metastable Ti-10V-3Fe-3Al (wt. %) alloy, which has a MoE of 12.4, during compressive loading after varying heat treatments [163]. They illustrated that {332}<113> twinning with α″-martensite, ω-phase, and slip were operational in the least stable alloy.…”

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confidence: 95%

“…The relationship between the MoE value and the phase stability diagram occurs because many of the beta stabilizing elements have similar 3d or 4s orbital electron configurations and comparatively low electronegativities and atomic radii. Research on stress-induced transformations is currently an active area of research due to its effect on mechanical response during deformation and its potential influence in engineering applications [24,112,[159][160][161][162][163]. A detailed review on this topic alone as provided by Kolli et al [33].…”

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confidence: 99%

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A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

491

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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confidence: 95%

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confidence: 99%

A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

491

175

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“…Besides, due to the stability of β matrix at 725 • C, slip of dislocations (Figure 5a) is one of the major deformation mechanisms detected in Ti-10-3-3 alloy, while twinning mechanism reported by Ahmed et al [18,20] for Ti-10-3-3 deformed at room temperature was not observed. In materials with bcc crystal structures, a/2<111> dislocation is split into three fractional a/6<111> dislocations, which initially glide along their individual {112} β planes under the resolved shear stress and then cross-slip onto the most stressed {112} β plane to form a twin nucleus [46,47].…”

Section: Discussionmentioning

confidence: 93%

“…In this study, two kinds of ω phase were noticed: (1) nanosized spherical or ellipsoidal particles (ω ath ) (Figure 5d) that have been observed to occur on accelerated cooling in metastable-β titanium alloys [18,20,38] and (2) lamellae ω (stress-induced ω) (Figure 5c) which has been reported in titanium alloys after plastic deformation [23,44,45]. Shuffle of atoms in {112} β planes in the direction of 111 has been suggested as the formation mechanism for both ω types [44].…”

Section: Discussionmentioning

confidence: 99%

“…In the last decade attention has been focused on the formation and operation of both twinning and phase transformation mechanisms including stress-induced α" martensite and stress-induced ω during deformation of metastable-β titanium alloys at room temperature, such as Ti-10-2-3 [18,19], Ti-10V-3Fe-3Al-0.27O (wt. %) [20], Ti-8.0Mo-3.9Nb-2.0V-3.1Al (wt.…”

Section: Introductionmentioning

confidence: 99%

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Formation of Deformation-Induced Products in a Metastable-β Titanium Alloy during High Temperature Compression

Samiee

Casillas

Ahmed

et al. 2018

Metals

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A metastable-β titanium alloy, Ti-10V-3Fe-3Al (wt. %), was subjected to thermo-mechanical processing including the compression test at 725 • C, which is below the β transus temperature (780 • C), and at strain rate of 10 −3 s −1 . The presence of phases was determined using transmission electron microscopy and X-ray diffraction. Although the dynamic recovery took place together with slip, both deformation-induced α" martensite and ω were detected as other operating mechanisms for the first time in metastable-β titanium alloy deformed in α + β region. The volume fraction of stress-induced α" was higher than that of the same alloy deformed at room temperature due to a higher strain applied. Stress-induced twinning was not operational, which could be related to the priority of slip mechanism at high temperature resulted from thermally-assisted nucleation and lateral migration of kink-pairs.

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A Review on Biomedical Titanium Alloys: Recent Progress and Prospect

2019

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Compared with stainless steel and Co-Cr-based alloys, Ti and its alloys are widely used as biomedical implants due to many fascinating properties, such as superior mechanical properties, strong corrosion resistance, and excellent biocompatibility. After briefly introducing several most commonly used biomedical materials, this article reviews the recent development in Ti alloys and their biomedical applications, especially the low-modulus β-type Ti alloys and their design methods. This review also systemically investigates the recently attractive progress in preparation of biomedical Ti alloys, including additive manufacturing, porous powder metallurgy, and severe plastic deformation, applied in the manufacturing and the influenced microstructures and properties. Nevertheless, there are still some problems with the long-term performance of Ti alloys, and therefore several surface modification methods are reviewed to further improve their biological activity, wear resistance, and corrosion resistance. Finally, the biocompatibility of Ti and its alloys is concluded. Summarizing the findings from literature, future prediction is also conducted. Darmstadt. His current research interest is focusing on the metal additive manufacturing (e.g. selective laser melting, electron beam melting), titanium alloys and composites, and processing-microstructure-properties in high-performance materials.

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The influence of β phase stability on deformation mode and compressive mechanical properties of Ti–10V–3Fe–3Al alloy

Cited by 199 publications

References 40 publications

A Review of Metastable Beta Titanium Alloys

A Review of Metastable Beta Titanium Alloys

Formation of Deformation-Induced Products in a Metastable-β Titanium Alloy during High Temperature Compression

A Review on Biomedical Titanium Alloys: Recent Progress and Prospect

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