Correlation between alpha phase morphology and tensile properties of a new beta titanium alloy

Sadeghpour, Saeed; Abbasi, S.M.; Morakabati, M.; Bruschi, Stefania

doi:10.1016/j.matdes.2017.02.043

Cited by 122 publications

(45 citation statements)

References 33 publications

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“…%) alloy known as TB17, which has a MoE value of 5.3 [67]; the near-beta Ti-4Al-7Mo-3Cr-3V (wt. %) alloy, which has a MoE value of 9.8 [68]; and the metastable Ti-3.5Al-5Mo-6V-3Cr-2Sn-0.5Fe (wt. %) alloy, which has a MoE value of 11.1 [69,70].…”

Section: Aircraft Structuresmentioning

confidence: 99%

“…%) alloy has decreasing tensile strengths with increasing aging temperature between approximately 490 °C (914 °F) and 600 °C (1112 °F), Figure 12. Since the mechanical properties of beta Ti alloys can be optimized for an application by aging, numerous studies of the structure-property relationships are present in the existing literature [68,70,127,129,130]. These studies typically focus on microstructural evolution of the secondary α-phase precipitates and concomitant changes in tensile or hardness properties.…”

Section: Agingmentioning

confidence: 99%

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A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

430

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: Aircraft Structuresmentioning

confidence: 99%

Section: Agingmentioning

confidence: 99%

A Review of Metastable Beta Titanium Alloys

Kolli

Devaraj

2018

Metals

430

175

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“…After double-aging heat treatment, a lot of α precipitations with different morphologies: fine particle α, acicular α and discontinued grain boundary α, were precipitated from the β titanium matrix, this contributed to both of the strength and ductility, because fine particles and/or acicular structure were harder than β phase and harder to be deformed; α/β interfaces pinned the movement of dislocations, increasing the strength; 9,10 and grain boundary α could be deformed by slipping and shearing mechanisms so that the dislocations could be activated and accumulated within them, improving the ductility. 11,12 Due to the finer microstructures and α precipitations formed in the as-extruded Ti-5553 alloy than that of the ingot Ti-5553 alloy, the strength of the studied Ti-5553 alloy was much more higher than that of the ingot metallurgy Ti-5553 alloy. 13 The oxygen contents for both of hot-pressed and extruded Ti-5553 alloy were 0.39wt.%, which were about 0.06wt.% increase comparing to the starting powder mixture (0.33wt.%).…”

Section: Microstructure and Properties Of Ti-5553 Alloymentioning

confidence: 99%

Producing High-Quality Titanium Alloy by a Cost-Effective Route Combining Fast Heating and Hot Processing

Yang

Raynova

Singh

et al. 2018

JOM

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Powder Metallurgy (PM) is a very attractive method for producing titanium alloys, which can be near net shape formed and have freedom in composition selection. However applications are still limited due to product cost affordability. In this paper, we will discuss a possible cost-effective route, combining fast heating and hot processing, to produce titanium alloys with similar or even better mechanical properties than that of ingot metallurgy titanium alloys. Two titanium alloys, Ti-5Al-5V-5Mo-3Cr (Ti-5553) and Ti-5Fe alloy, were successfully produced from HDH titanium powder and other master alloy powders using the proposed processing route. The effect of processing route on microstructural variation and mechanical properties were discussed.

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“…Titanium alloys have been widely used in various industries due to their high strength, low density and strong corrosion resistance. Among them, high-strength titanium alloys play an important role in the manufacture of aerospace structural parts [1,2]. TC21 titanium alloy is a high strength and high toughness titanium alloy developed on the basis of Ti-62222 alloy in the United States.…”

Section: Introductionmentioning

confidence: 99%

Design of high strength titanium alloy through finding a critical composition with ultra-fine α phase

Zhang

Zhou

Wang

et al. 2020

Mater. Res. Express

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This study presents the design of a high strength titanium alloy based on the idea that the β titanium alloy with critically stable composition could precipitate ultra-fine α phase. An efficient method was used to find the composition of TC21-xV alloy in which ultra-fine α phase could be obtained. It is found that TC21-5V alloy containing ultra-fine α phase and possessing highest hardness could be obtained after solution treatment in the β single-phase region and subsequent aging. The morphology of primary and secondary α phases can be controlled by changing the solution treatment and aging temperatures. Calculation results of driving force and growth rate of secondary α phase show that the growth rate may be a decisive factor for the final size of secondary α phase after solution and aging treatments in the two-phase region. Finally, when the alloy was solution treated at 820°C and aged at 500°C, the highest strength of 1540 MPa was obtained. The alloy was solution treated at 820°C and aged at 600°C exhibited high strength of 1210 MPa with 11.4% elongation.

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Correlation between alpha phase morphology and tensile properties of a new beta titanium alloy

Cited by 122 publications

References 33 publications

A Review of Metastable Beta Titanium Alloys

A Review of Metastable Beta Titanium Alloys

Producing High-Quality Titanium Alloy by a Cost-Effective Route Combining Fast Heating and Hot Processing

Design of high strength titanium alloy through finding a critical composition with ultra-fine α phase

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