The effect of ageing on microstructure and mechanical properties of powder Ti–5Al–5Mo–5V–1Cr–1Fe alloy

Ahmed, Mansur; Savvakin, Dmytro G.; Ивасишин, О. М.; Pereloma, Elena V.

doi:10.1016/j.msea.2014.03.030

Cited by 47 publications

(13 citation statements)

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“…[31] that deformation twinning and martensitic transformation together with their constant interactions are responsible for the continuous increase of work-hardening rate during stage II. On the other hand, only two stages of work-hardening rate are found for 500°C sample as described in the previous study [32]. These two stages are exponential decrease in workhardening rate followed by a slower, nearly plateauing decrease.…”

Section: Methodssupporting

confidence: 53%

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

et al. 2015

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Section: Methodssupporting

confidence: 53%

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

et al. 2015

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“…(3), (7), (8) and (10), a fracture toughness model correlated with crack propagation path is shown in Eq. (11).…”

Section: Prediction Modelmentioning

confidence: 99%

“…Among various kinds of titanium alloys, Ti-5Al-5Mo-5V-1Cr-1Fe (wt%) alloy, a near b damage-tolerant titanium alloy, is especially suitable for making big critical aviation forgings due to its advantages such as low cost, high strength and toughness [7]. The excellent properties of Ti-55511 (Ti-5Al-5Mo-5V-1Cr-1Fe) alloy have attracted too much attention [8][9][10][11][12][13]. Liu et al [8] studied the deformation behavior in the isothermal compression of Ti-55511 alloy.…”

Section: Introductionmentioning

confidence: 99%

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The fracture toughness and its prediction model for Ti–5Al–5Mo–5V–1Cr–1Fe titanium alloy with basket-weave microstructure

Shi

Zeng

Shi

et al. 2015

Journal of Alloys and Compounds

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“…Ahmed et al [32] studied the effect of aging time on the structure-property correlation of the thermo-mechanically processed powder Ti-5Al-5V-5Mo-1Cr-1Fe (TC18) alloy at 923 K. The influences of solution treatment on microstructure and mechanical properties of the Ti7333 and Ti6554 alloys have been investigated by Fan et al [33] and Li et al [34], respectively. As refined dispersions of secondary α phase precipitates play a critical role in the improvement of the mechanical properties of β titanium alloys, experiments on α phase nucleation sites and influence of ω phase on the refinement of the α phase precipitates have been conducted by Zheng et al [35], Ahmed et al [36], Coakley et al [37] and Nag et al [38].…”

Section: β Titanium Alloys For Aircraft Structural Applicationsmentioning

confidence: 99%

The dynamic response of β titanium alloys to high strain rates at room and elevated temperatures

Zhan¹

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Titanium and its alloys fulfil a wide range of applications involving aerospace, biomedical, chemical and petroleum industries due to their extraordinary properties such as high specific strength, excellent biocompatibility and corrosion resistance. Among different types of titanium alloys, β titanium alloys have a unique range of properties such as an excellent combination of high strength and fracture toughness and low Young's modulus. Therefore, the usage of β titanium alloys in the manufacturing of some key components in aerospace and biomedical industries has continually increased in the past decade.Nowadays many commercial manufacturing processes for metallic materials such as machining, explosive welding, hot forging and extrusion employ high strain rates and are conducted at elevated temperatures. Also, high-strain-rate deformation can be encountered in collisions such as in car crashes, bird strikes on airplanes and micrometeorite impacts on space structures. Hence a large number of studies have been conducted on the dynamic response of metallic materials including copper, steels, tantalum, Ti-6Al-4V alloy and commercially pure titanium to high strain rates. Due to limited knowledge of the dynamic behaviour of β titanium alloys, this thesis mainly investigates the stress-strain behaviour and microstructural evolution of β titanium alloys under high strain rates at room and elevated temperatures.Split Hopkinson Pressure Bar compressive tests were carried out on two new types of β titanium alloys with different levels of β phase stability, the Ti-6Cr-5Mo-5V-4Al (wt. %) and Ti-25Nb-3Zr-3Mo-2Sn (wt.%) alloys, at strain rates ranging from 10 -3 s -1 to 10 4 s -1 and temperatures ranging from 293K to 1173K. The Ti-6Cr-5Mo-5V-4Al alloy, with relatively high β phase stability, represents an alloy type which can be engineered through heat treatment or thermo-mechanical processing to achieve a superior combination of strength and fracture toughness. While the Ti-25Nb-3Zr-3Mo-2Sn alloy with relatively low β phase stability represents an alloy type which can be applied in biomedical applications due to their low Young's modulus and superelastic properties.For the Ti-6Cr-5Mo-5V-4Al alloy, dislocation slip is dominant at all testing strain rates and temperatures in this research. The flow stress increases with increasing strain rate but decreasing temperature. Also, it is more sensitive to temperature than strain rate. At ambient temperatures, the strain hardening rate exhibited by the Ti-6Cr-5Mo-5V-4Al alloy at high strain rates is much lower than that at quasi-static strain rates, which is attributed to the thermal softening effect brought byHongyi Zhan II The University of Queensland adiabatic heating. While for the Ti-25Nb-3Zr-3Mo-2Sn alloy, multiple deformation mechanisms including dislocation slip, {332} <113> and {112} <111> mechanical twinning, stress-induced martensitic α" and ω phase transformations can be activated simultaneously and among them {332} <113> twinning is dominant at 293K regardless of...

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The effect of ageing on microstructure and mechanical properties of powder Ti–5Al–5Mo–5V–1Cr–1Fe alloy

Abstract: E. (2014). The effect of ageing on microstructure and mechanical properties of powder Ti-5Al-5Mo-5V-1Cr-1Fe alloy. Materials Science and Engineering A, 605 (May), 89-97. The effect of ageing on microstructure and mechanical properties of powder Ti-5Al-5Mo-5V-1Cr-1Fe alloy

Cited by 47 publications

References 46 publications

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

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

The fracture toughness and its prediction model for Ti–5Al–5Mo–5V–1Cr–1Fe titanium alloy with basket-weave microstructure

The dynamic response of β titanium alloys to high strain rates at room and elevated temperatures

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