Deformation Response of Titanium Alloy under Static and Dynamic Loading

Sharma, S.; Majila, Anuradha Nayak; Chavan, Vivek; Fernando, Diego; Patel, Rajesh; Babu, S. N. Narendra

doi:10.1016/j.proeng.2016.12.247

Cited by 13 publications

(4 citation statements)

References 23 publications

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“…These flow stress characteristics are commonly reported with Ti64 in compression [28]. Increasing strain rate results in increased generation of dislocations and subsequent interactions in Ti64, thus delaying failure whilst accumulating increased stress [29]. Ti64 in compression experiences catastrophic shear failure.…”

Section: Compressive Behavioursupporting

confidence: 61%

“…Ti64 in compression experiences catastrophic shear failure. The fracture can P. Li 27/01/2021 14 be attributed to adiabatic shear mechanisms resulting in localised deformation, heating and failure of the material [29][30][31]. Ti64 in low rate compression clearly highlights fracture at approximately 45° where maximum shear stresses are experienced (Fig.…”

Section: Compressive Behaviourmentioning

confidence: 99%

See 1 more Smart Citation

Deformation and failure behaviour of a titanium alloy Ti-407 with reduced aluminium content: A comparison with Ti-6Al-4V in tension and compression

Sneddon

Mulvihill

Wielewski

et al. 2021

Materials Characterization

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Section: Compressive Behavioursupporting

confidence: 61%

Section: Compressive Behaviourmentioning

confidence: 99%

Deformation and failure behaviour of a titanium alloy Ti-407 with reduced aluminium content: A comparison with Ti-6Al-4V in tension and compression

Sneddon

Mulvihill

Wielewski

et al. 2021

Materials Characterization

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“…This phenomenon can further be investigated for specimens loaded under a wider range of strain rates. As the hardness of material is known to be proportional to the yield strength, determination of the Johnson and Cook (JC) model parameters is useful in studying this phenomenon [33].…”

Section: Hardness Test Resultsmentioning

confidence: 99%

Effect of Stress-Relieving Heat Treatment on the High Strain Rate Dynamic Compressive Properties of Additively Manufactured Ti6Al4V (ELI)

Muiruri

Maringa

Preez

et al. 2020

Metals

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A study was undertaken on the compressive high strain rate properties and deformation behaviour of Direct Metal Laser-Sintered (DMLS) Ti6Al4V (ELI) parts in two separate forms: as-built (AB) and stress relieved (SR). The high strain rate compression tests were carried out using a Split Hopkinson Pressure Bar test system at ambient temperature. The average plastic strain rates attained by the system were 400 s−1 and 700 s−1. Comparative analyses of the performance (flow stresses and fracture strains) of AB and SR specimens were carried out based on the results obtained at these two plastic strain rates. Microstructural analyses were performed to study the failure mechanisms of the deformed specimens and fracture surfaces. Vickers microhardness test values were obtained before and after high strain rate compression testing. The results obtained in both cases showed the strain rate sensitivity of the stress-relieved samples to be higher in comparison to those of as-built ones, at the same value of true strain.

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“…Despite the large amount of research carried out, the design of 3D constructional elements with a complex geometric shape made of Ti-6Al-4V alloy is a serious scientific and technical problem, especially for the cases where the material suffers under extreme conditions [2]. It has been found that mechanical properties and failure mechanisms of Ti-6Al-4V depend on strain rate and stress triaxiality [3,4]. Due to its low heat conductivity, the Ti-6Al-4V undergoes localization of plastic deformation under high strain rates.…”

Section: Introductionmentioning

confidence: 99%

Localization of Plastic Deformation in Ti-6Al-4V Alloy

Skripnyak

2021

Metals

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This article investigated the mechanical behavior of Ti-6Al-4V alloy (VT6, an analog to Ti Grade 5) in the range of strain rates from 0.1 to 103 s−1. Tensile tests with various notch geometries were performed using the Instron VHS 40/50-20 servo hydraulic testing machine. The Digital Image Correlation (DIC) analysis was employed to investigate the local strain fields in the gauge section of the specimen. The Keyence VHX-600D digital microscope was used to characterize full-scale fracture surfaces in terms of fractal dimension. At high strain rates, the analysis of the local strain fields revealed the presence of stationary localized shear bands at the initial stages of strain hardening. The magnitude of plastic strain within the localization bands was significantly higher than those averaged over the gauge section. It was found that the ultimate strain to fracture in the zone of strain localization tended to increase with the strain rate. At the same time, the Ti-6Al-4V alloy demonstrated a tendency to embrittlement at high stress triaxialities.

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Deformation Response of Titanium Alloy under Static and Dynamic Loading

Cited by 13 publications

References 23 publications

Deformation and failure behaviour of a titanium alloy Ti-407 with reduced aluminium content: A comparison with Ti-6Al-4V in tension and compression

Deformation and failure behaviour of a titanium alloy Ti-407 with reduced aluminium content: A comparison with Ti-6Al-4V in tension and compression

Effect of Stress-Relieving Heat Treatment on the High Strain Rate Dynamic Compressive Properties of Additively Manufactured Ti6Al4V (ELI)

Localization of Plastic Deformation in Ti-6Al-4V Alloy

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