Investigation of surface integrity in the laser-assisted turning of AISI 4340 hardened steel

Khatir, Farzad Ahmadi; Sadeghi, Mohammad; Akar, Samet

doi:10.1016/j.jmapro.2020.09.073

Cited by 23 publications

(9 citation statements)

References 24 publications

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“…Ultrasonically assisted turning (UAT) is one such hybrid turning process, where mechanical vibrations at high frequencies (>20 kHz) are imposed on the cutting tool's tip during the machining process. Prior studies [11][12][13] show that this machining technique reduces cutting forces, improves surface finish, and induces compressive residual stresses in the machined component, which, in turn, enhances its fatigue life. Laserassisted turning (LAT) is another hybrid machining process, where a focused laser beam is used to ablate the workpiece material resulting in an improved machining process with reduced cutting forces.…”

Section: Introductionmentioning

confidence: 99%

Hybrid-hybrid turning of micro-SiCp/AA2124 composites: A comparative study of laser-and-ultrasonic vibration-assisted machining

Kim

Zani

Abdul-Kadir

et al. 2023

Journal of Manufacturing Processes

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Section: Introductionmentioning

confidence: 99%

Hybrid-hybrid turning of micro-SiCp/AA2124 composites: A comparative study of laser-and-ultrasonic vibration-assisted machining

Kim

Zani

Abdul-Kadir

et al. 2023

Journal of Manufacturing Processes

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“…Thermal assistance can be provided for any material whether it is brittle or ductile materials. For brittle materials, the yield strength of the material is reduced below the fracture resistance and the behavior of the brittle material changes into brittle-to-ductile at high temperatures, making machining relatively easier [15]. The yield strength of the material is decreased whereas ductility is increased at high temperatures for the ductile material which results in the reduction of tool wear and cutting force, and improvement in the surface quality of the machined surface [16].…”

Section: Introductionmentioning

confidence: 99%

Radial direction ultrasonic-vibration and laser assisted turning of Al3003 alloy

Deswal

Kant

2023

Mater. Res. Express

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The utilization of various energy sources to assist the machining process has become prominent to achieve substantial improvement in machining performance. These energy sources have also resulted in an alternative to cutting fluids which is safer for both the universe and human beings. The combined action of laser and ultrasonic vibration energies during the turning process has shown significant achievement in machining process capabilities. Therefore, an attempt has been made to provide ultrasonic vibration in the radial direction and laser to preheat aluminium 3003 alloy simultaneously during the ultrasonic-vibration-laser assisted turning (UVLAT) process. Machining performance has been analyzed in terms of machining forces, machining temperature, chip morphology, surface damage, and surface roughness. A comparative machining performance analysis has been carried out among the conventional turning (CT), laser assisted turning (LAT), ultrasonic vibration assisted turning (UVAT), and UVLAT processes. The outcomes of the current study indicate significant benefits of the UVLAT process on the machining performance of aluminium 3003 alloy. However, surface damage and surface roughness have been affected negatively during the UVLAT process due to the pin-point hammering and particle adhesion on the workpiece part. Hence, the selection of vibration direction is a critical factor during the vibration machining processes.

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“…With the rapid development of modern manufacturing and processing technology, the emergence of laser-assisted machining technology has overcome the processing problems of difficult-to-machine materials and has received extensive attention from the outside world. Laser-assisted machining technology combines traditional cutting and laser heating, where the laser is used to heat the material in the cutting area directly in front of the tool to reduce the strength of the material in this area and to form a softening layer, and the material is then removed by conventional cutting [ 3 , 4 ]. Compared with the traditional processing methods of turning, grinding, and milling, the processing efficiency and processing quality of laser-assisted machining technology have been significantly improved, and are also more in line with the concept of energy saving, which has become the focus of current world research [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Process Parameters during Laser-Assisted Turning of SiC Ceramics Based on Orthogonal Method and Response Surface Methodology

et al. 2022

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In this study, laser-assisted machining experiments are carried out on silicon carbide (SiC) ceramic materials by a turning process, and laser power, cutting depth, rotational speed, and feed speed are selected as research factors. In order to improve the surface processing quality of laser-assisted turning of SiC ceramics and obtain the smallest surface roughness, the orthogonal method and response surface method are used to investigate the effect of various factors on surface roughness. The effect of various factors on surface roughness is evaluated by variance analysis, mean analysis, main effect diagram, 3D response surface, and corresponding contour diagram. The surface roughness prediction model is established based on the response surface method, and the prediction error is 4.1% with high accuracy. The experimental results show that laser power and cutting depth are the most significant factors affecting surface roughness, and rotational speed is a significant factor affecting surface roughness. Under the optimum process conditions, the smallest surface roughness Ra obtained by the response surface method is 0.294 μm, which is lower than 0.315 μm obtained by the orthogonal method, and the surface quality is higher. Therefore, the optimal process parameters of the response surface method can obtain the smallest surface roughness and higher surface quality in laser-assisted turning of SiC ceramics.

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Investigation of surface integrity in the laser-assisted turning of AISI 4340 hardened steel

Cited by 23 publications

References 24 publications

Hybrid-hybrid turning of micro-SiCp/AA2124 composites: A comparative study of laser-and-ultrasonic vibration-assisted machining

Hybrid-hybrid turning of micro-SiCp/AA2124 composites: A comparative study of laser-and-ultrasonic vibration-assisted machining

Radial direction ultrasonic-vibration and laser assisted turning of Al3003 alloy

Experimental Investigation on Process Parameters during Laser-Assisted Turning of SiC Ceramics Based on Orthogonal Method and Response Surface Methodology

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