Deformation Mechanisms in the Near-β Titanium Alloy Ti-55531

Dikovits, Martina; Poletti, María Cecilia; Warchomicka, Fernando

doi:10.1007/s11661-013-2073-4

Cited by 97 publications

(42 citation statements)

References 35 publications

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“…1(c)). Analogous microstructures that reflect the spinodal decomposition mechanism for b were obtained upon quenching Cu-Ti alloys and after cooling a Ti-6Al-4V alloy produced by hot isostatic pressing Table 1 Composition of the Ti-5Al-5Mo-5V-3Cr-1Zr alloy [24]. [28,29].…”

Section: In Situ High Energy Synchrotron X-ray Diffractionmentioning

confidence: 85%

“…The b-transus temperature, T b , is 803°C [24]. Samples of 20 Â 20 Â 20 mm 3 were cut from the as-received ingot and subjected to an isothermal heat treatment at 900°C (b-field) for 20 min in dynamic argon 4.6 atmosphere and quenched in RT water.…”

Section: Methodsmentioning

confidence: 99%

“…The applications comprise aircraft components mainly located in the airframe and in the landing gear [5,6,11]. To the best knowledge of the authors just few works analysed heat treating of the Ti-55531 alloy [23,24], while no one evaluates the formation of a during heating of the b solution treated microstructure.…”

Section: Introductionmentioning

confidence: 99%

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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

et al. 2015

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Section: In Situ High Energy Synchrotron X-ray Diffractionmentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2015

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“…For another, the primary and second a phases transform to b phase, promoting the decrease in grain size. Generally, the two mechanisms occur simultaneously, but the mechanism of phase transition will play a dominant role when the deformation temperature goes up to a certain degree [14][15][16].…”

Section: Effect Of Deformation Temperature On Microstructurementioning

confidence: 99%

Microstructure evolution of a new near-β titanium alloy: Ti555211 during high-temperature deformation

Feng

2015

Rare Met.

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The isothermal compression testing of Ti555211 titanium alloys was carried out at deformation temperatures from 750 to 950°C in 50°C intervals, with strain rate of 0.001-1.000 s -1 and height reduction of 20 %-60 %. The effect of processing parameters (deformation temperature, strain rate and deformation degree) on the microstructure evolution and the microstructure variables was investigated. The results show that the content of primary a phase decreases with the increase in deformation temperature. The effect of strain rate on microstructure variables of isothermally compressed Ti555211 alloy is mainly dependent on the deformation temperature. The fine second a phase partly transforms to b phase due to the deformation heat effect at the high strain rate. a phase becomes globular with temperature increasing and strain rate decreasing. In contrast, a phase is refined with temperature decreasing and strain rate increasing. The deformation degree has a little influence on the grain size and the morphology of primary a phase, but the effect of deformation degree on the morphology of second a phase is significant. The larger deformation degree is in favor of the globularization of lamellar a structure.

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“…The grain refinement within an adiabatic shear band in different metals under dynamic loads may be elucidated by different mechanisms, such as dynamic recrystallization (Ref [10][11][12], dynamic recovery (Ref 13), phase transformation ( Ref 14,15). Many studies had been carried out to examine conventional processing of Ti-Al-Mo-V alloys (Ref [16][17][18][19]. However, there are few reports regarding the high velocity shear deformation of a fine-grain-sized near-beta Ti alloy Ti-55511, especially reports identifying an adiabatic shear band.…”

Section: Introductionmentioning

confidence: 99%

Shear Localization and its Related Microstructure Mechanism in a Fine-Grain-Sized Near-Beta Ti Alloy

Wang

Sun

Hahn

et al. 2014

J. of Materi Eng and Perform

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Shear localization is an important deformation and failure mechanism for the high strength near beta finegrain-sized titanium alloy used in aircraftÕs gear at high rate deformation. Hat-shaped specimens are used to induce the formation of an adiabatic shear band under controlled shock-loading tests. Unstable shear deformation of the alloy emerges after the true flow stress reaches 1147 MPa, the first vibration peak during the split Hopkinson pressure bar testing, and the whole process lasts about 68 ls. The microstructures within the shear band in the alloy are investigated by means of light microscopy, scanning electron microscopy, and transmission electron microscopy. The results show that the grains in the boundary of the shear band are highly elongated along the shear direction, and the core of the shear band consists of ultrafine-equiaxed grains with diameters 0.1-0.3 lm, low dislocation density, and no observed phase transformation. The rotational dynamic recrystallization is used to explain the microstructural evolution mechanism in the shear band. Kinetic calculations indicate that the recrystallized ultrafine grains are formed during the deformation and do not undergo significant growth by grain boundary migration after deformation.

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Deformation Mechanisms in the Near-β Titanium Alloy Ti-55531

Cited by 97 publications

References 35 publications

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

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

Microstructure evolution of a new near-β titanium alloy: Ti555211 during high-temperature deformation

Shear Localization and its Related Microstructure Mechanism in a Fine-Grain-Sized Near-Beta Ti Alloy

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