FEM modelling of residual stresses of Ti-6Al-4V during micro-turning considering the scale effect

KHANDAI, DEBENDRA KUMAR; Mathew, Jose; Kuriachen, Basil

doi:10.1007/s12046-022-01865-8

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…Nanoindentation technology is also known as depth-sensing indentation, which is used to evaluate the elastic modulus, hardness, local mechanical properties, elasticplastic responses, and micro-heterogeneity properties in materials science through the analysis of load-depth curves. [13] Kumar [14] calculated the surface residual stress of micro-turning of titanium alloy using load-depth curves of stressed and stress-free workpiece obtained by indentation experiments and verified the effectiveness of the FE model simulation. Yan Wen [15] carried out nanoindentation experiments on (TiB+TiC)/Ti6Al4V titanium matrix composites, and found that the introduction of the reinforcements increases the microhardness of the material.…”

Section: Introductionmentioning

confidence: 72%

Experimental study of surface residual stress and hardness of TiBw mesh reinforced titanium matrix composites in rotary ultrasonic grinding

Dong,

Guo,

Dai

et al. 2024

Preprint

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TiBw mesh reinforced titanium matrix composites were investigated by rotary ultrasonic grinding experiments using nickel-based electroformed diamond grinding wheel and building a single diamond abrasive grain model and a 2D rotary ultrasonic grinding finite element model. Surface residual stress is obtained by simulation and verified by univariate experiments. Combined with nanoindentation experiments, the changes of residual stress and hardness were acquired. The results show that the reinforced phase fibers will be subjected to high mechanical stress which break the fibers and turn into chips with matrix material. The residual stress of TiBw-rich region is closer to the actual value due to the high elastic modulus and low residual strain of TiB. Residual compressive stress around -500MPa exists in the surface of workpiece under different process parameters. The residual stress decreases remarkably as the spindle speed increases. Meanwhile, the work hardening of workpieces changes similarly as the residual stress. The subsurface microstructure of titanium matrix composites after processing was tested by nanoindentation experiments and backscattered electron diffraction (EBSD). It was found that the surface hardness and dislocation density of the workpiece increased after machining, and the affected depth was about 10~15μm. XRD was further used to measure the surface phase of the workpiece under different processing parameters, the results show that the content of TiB reinforcements on the workpiece surface increases and the grain refinement decreases with the increase of spindle speed.

show abstract

Section: Introductionmentioning

confidence: 72%

Experimental study of surface residual stress and hardness of TiBw mesh reinforced titanium matrix composites in rotary ultrasonic grinding

Dong,

Guo,

Dai

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Nanoindentation technology is also known as depth-sensing indentation, which is used to evaluate the elastic modulus, hardness, local mechanical properties, elasticplastic responses, and micro-heterogeneity properties in materials science through the analysis of load-depth curves. [13] Kumar [14] calculated the surface residual stress of micro-turning of titanium alloy using load-depth curves of stressed and stress-free workpiece obtained by indentation experiments and verified the effectiveness of the FE model simulation. Yan Wen et al [15] carried out nanoindentation experiments on (TiB+TiC)/Ti6Al4V titanium matrix composites, and found that the introduction of the reinforcements increases the microhardness of the material.…”

Section: Introductionmentioning

confidence: 72%

Experimental study on surface residual stress and hardness of rotary ultrasonic grinding of titanium matrix composites

Dong

Liu²,

Wang³

et al. 2023

Preprint

View full text Add to dashboard Cite

TiBw mesh reinforced titanium matrix composites were investigated by rotary ultrasonic grinding experiments using nickel-based electroformed diamond grinding wheel and building a single diamond abrasive grain model and a 2D rotary ultrasonic grinding finite element model. Surface residual stress is obtained by simulation and verified by univariate experiments. Combined with nanoindentation experiments, the changes of residual stress and hardness were acquired. The results show that the reinforced phase fibers will be subjected to high mechanical stress which break the fibers and turn into chips with matrix material. The residual stress of TiBw-rich region is closer to the actual value due to the high elastic modulus and low residual strain of TiB. Residual compressive stress around − 500MPa exists in the surface of workpiece under different process parameters. As the grinding depth increases, the residual stress increases first and then decrease. At the same time, the residual stress increases as the feed speed increase. And the residual stress decreases remarkably as the spindle speed increases. Meanwhile, the work hardening of workpieces changes similarly as the residual stress. The error between experiment and simulation is under 10%, which verified the effectiveness of the finite element model.

show abstract

Experimental study of surface residual stress and hardness of TiBw mesh reinforced titanium matrix composites in rotary ultrasonic grinding

Dong,

Guo,

Dai

et al. 2024

Int J Adv Manuf Technol

View full text Add to dashboard Cite

TiBw mesh reinforced titanium matrix composites were investigated by rotary ultrasonic grinding experiments using nickel-based electroformed diamond grinding wheel and building a single diamond abrasive grain model and a 2D rotary ultrasonic grinding finite element model. Surface residual stress is obtained by simulation and verified by univariate experiments. Combined with nanoindentation experiments, the changes of residual stress and hardness were acquired. The results show that the reinforced phase fibers will be subjected to high mechanical stress which break the fibers and turn into chips with matrix material. The residual stress of TiBwrich region is closer to the actual value due to the high elastic modulus and low residual strain of TiB. Residual compressive stress around -500MPa exists in the surface of workpiece under different process parameters. The residual stress decreases remarkably as the spindle speed increases. Meanwhile, the work hardening of workpieces changes similarly as the residual stress. The subsurface microstructure of titanium matrix composites after processing was tested by nanoindentation experiments and backscattered electron diffraction (EBSD). It was found that the surface hardness and dislocation density of the workpiece increased after machining, and the affected depth was about 10~15μm. XRD was further used to measure the surface phase of the workpiece under different processing parameters, the results show that the content of TiB reinforcements on the workpiece surface increases and the grain refinement decreases with the increase of spindle speed.

show abstract

FEM modelling of residual stresses of Ti-6Al-4V during micro-turning considering the scale effect

Cited by 5 publications

References 34 publications

Experimental study of surface residual stress and hardness of TiBw mesh reinforced titanium matrix composites in rotary ultrasonic grinding

Experimental study of surface residual stress and hardness of TiBw mesh reinforced titanium matrix composites in rotary ultrasonic grinding

Experimental study on surface residual stress and hardness of rotary ultrasonic grinding of titanium matrix composites

Experimental study of surface residual stress and hardness of TiBw mesh reinforced titanium matrix composites in rotary ultrasonic grinding

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