Adiabatic self-heating determination for Ti6Al4V at different temperatures

Sela, Andres; Ortiz-de-Zarate, G.; Soler, D.; Germain, Guénaël; Mayorga, Linamaría Gallegos; Arrazola, P.J.

doi:10.1016/j.ijheatmasstransfer.2022.123747

International Journal of Heat and Mass Transfer

2023

DOI: 10.1016/j.ijheatmasstransfer.2022.123747

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Adiabatic self-heating determination for Ti6Al4V at different temperatures

Andres Sela

G. Ortiz-de-Zarate

D. Soler

et al.

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2024

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Cited by 4 publications

References 48 publications

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Enhancing orthogonal finishing machining of Ti6Al4V with laser-ablated tool geometry modifications

Kneubühler,

Zhang,

Haudenschild

et al. 2024

Int J Adv Manuf Technol

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Finishing machining of Ti6Al4V, known for its high strength and heat conduction resistance, demands optimisation to achieve high-quality end products. This study explores modifying the chip contact length on the rake face and altering the flank face with a cavity to minimise process forces and temperatures while maintaining cutting edge integrity. The research validates the manufacturability of ultra-short pulsed laser-ablated tool geometry modifications, indicating potential for industrial scale-up. Extensive experimental evaluations under dry conditions assess the impact of tool modifications at various feed rates for planing and turning. Significant reductions in process forces and temperatures were observed with rake face modifications, particularly at a cavity distance of approximately 34 µm. Ideal performance was noted for feed rates between 0.035 and 0.045 mm for planing and 0.040 to 0.045 mm/rev for turning. Smoothed Particle Hydrodynamics (SPH) simulations employing a Johnson-Cook material model were used to analyse chip formation and to predict the process forces. These simulations revealed a clear change in the chip formation and lower process forces and temperatures. The SPH results closely matched experimental outcomes, with a discrepancy of less than 7 % in cutting forces for both tool types, although feed forces were underestimated by about 50 %. The effect of the tool modification is reflected accurately at the respective feeds.

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Enhancing orthogonal finishing machining of Ti6Al4V with laser-ablated tool geometry modifications

Kneubühler,

Zhang,

Haudenschild

et al. 2024

Int J Adv Manuf Technol

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The influence of the adiabatic heating coefficient on the near solidus forming process

Sajjad,

Agirre,

Plata

et al. 2024

Int J Mater Form

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The Near Solidus Forming (NSF) process represents a critical method for shaping metallic components under extreme temperature conditions. When metals deform plastically, significant amounts of heat can be generated, which is due to the conversion of plastic deformation energy in the material often known is adiabatic heating. In this study, the influence of the adiabatic heating coefficient (AHC) on temperature distribution and plastic strain during NSF process is investigated. For this purpose, three industrial benchmarks previously fabricated using NSF techniques are selected to serve as representative cases for analysis. To conduct the analysis, sensitivity studies is performed at two key temperatures: 1360 °C and 1370 °C. These temperatures are chosen to capture the range of operating conditions typically encountered in industrial NSF applications. The simulation tool FORGE NXT® is utilized to investigate the potential effect of AHC on equivalent plastic strain (EPS). The range of potential AHC values considered is between 85% and 100%, as determined from a comprehensive literature survey. The study suggests that the AHC has a minimal effect on the deformation behaviour of 42CrMo4 steel at NSF condition for the studied benchmarks. The findings of this study provide the inside to the importance of AHC in the developing of a reliable Digital Twin (DT) for industrial NSF application.

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Hole quality improvement in CFRP/Ti6Al4V stacks using optimised flow rates for LCO2 and MQL sustainable cooling/lubrication

Rodriguez,

Arrazola,

Cuesta

et al. 2024

Composite Structures

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Adiabatic self-heating determination for Ti6Al4V at different temperatures

Cited by 4 publications

References 48 publications

Enhancing orthogonal finishing machining of Ti6Al4V with laser-ablated tool geometry modifications

Enhancing orthogonal finishing machining of Ti6Al4V with laser-ablated tool geometry modifications

The influence of the adiabatic heating coefficient on the near solidus forming process

Hole quality improvement in CFRP/Ti6Al4V stacks using optimised flow rates for LCO2 and MQL sustainable cooling/lubrication

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