Analysis of temperature and surface hardening of low carbon thin steel sheets using Yb-fiber laser

Sarkar, Sagar; Muvvala, Gopinath; Chakraborty, Shitanshu Shekhar; Syed, B.; Nath, Ashish Kumar

doi:10.1016/j.surfcoat.2016.06.045

Cited by 31 publications

(11 citation statements)

References 17 publications

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“…In the same year, Sarkar et al investigated the laser surface hardening of low-carbon steel (0.05% and 0.07% C) using high-power Yb-fiber lasers. They found that the average Vickers hardness of 0.05% C steel was increased from 120 HV to 217 HV, while the average Vickers hardness of 0.07% C steel was increased from 160 HV to 280 HV [ 17 ]. Sato et al proved that laser surface hardening technology is widely applicable for sintered parts [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…They found that the average Vickers hardness of 0.05% C steel was increased from 120 HV to 217 HV, while the average Vickers hardness of 0.07% C steel was increased from 160 HV to 280 HV [ 17 ]. Sato et al proved that laser surface hardening technology is widely applicable for sintered parts [ 17 ]. Bouquet et al developed an integrated laser hardening system that is also equipped with an ultrasonic-assisted grinding system.…”

Section: Introductionmentioning

confidence: 99%

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Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes

2018

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A Coupled thermo-mechanical finite element model was employed to simulate the possible effects of varying laser scanning parameters on the surface hardening process for AISI 1045 and AISI 4140 steels. We took advantage of the high-power density of laser beams to heat the surface of workpieces quickly to achieve self-quenching effects. The finite element model, along with the temperature-dependent material properties, was applied to characterize the possible quenching and tempering effects during single-track laser surface heat treatment. We verified the accuracy of the proposed model through experiments. The effects of laser surface hardening parameters, such as power variation, scanning speed, and laser spot size, on the surface temperature distribution, hardening width, and hardening depth variations during the single-track surface laser treatment process, were investigated using the proposed model. The analysis results show that laser power and scanning speed are the key parameters that affect the hardening of the material. The numerical results reveal that the proposed finite element model is able to simulate the laser surface heat treatment process and tempering effect of steel.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes

2018

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“…Nguyen and Yang (14) presented a sequential method to estimate surface absorptivity in the laser surface hardening process using a 1D transient conduction heat transfer model. Sarkar et al (15) proposed a modified 1D heat conduction model to analyze the effects of temperature and surface hardening on low-carbon thin steel (thickness: 1 mm) using an Yb-fiber laser. Martínez et al (16) proposed a scanner-based laser hardening process for AI1045 steel and discussed the effects of scanning speed on the hardened layer thickness.…”

Section: Introductionmentioning

confidence: 99%

Tempering Effects of Multitrack Laser Surface Heat Treatment of AISI 1045 Steel

Kung¹,

Shih²,

Hsu³

et al. 2019

Sensors and Materials

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A thermo-elastic-plastic finite element model was employed to simulate and analyze the effects of high-power parameters on the laser heat treatment of AISI 1045 steel. Tempering effects of multitrack laser heat treatment using various process parameters-laser power, laser feed rate, laser overlap rate, and laser spot size-were analyzed to estimate the distribution of a hardening layer on the steel surface. Numerical simulation results indicated that the proposed finite element model is effective in analyzing the laser heat treatment of the steel surface and calculating the possibility of decreases in steel hardness due to tempering effects, enabling it to undergo rapid temperature increases and decreases.

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“…AlMangour group have developed a simulation model to predict the evolution of temperature on surface and thermal behaviors of the molten pool beneath various volumetric laser energy densities during the selective laser melting [3]. Sarkar et al have developed the simulation analysis of temperature and surface hardening of low carbon thin steel sheets using Yb-fiber laser [4]. These analysis show that temperature increase over time and into depth for different laser processing conditions is quite effective on depth hardness of the plate.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Temperature Distribution During Laser Hardening Process

Mosavi

Salehi

Nádai

et al. 2019

Preprint

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A novel mathematical model is developed to calculate the temperature distribution on the surface and bulk of a steel plate under the laser hardening process. The model starts with the basic heat equation then it is developed into a volumetric form and is connected to the various solid existing phases. The proposed model is based on three influencing parameters of the laser hardening process which are the velocity of the laser spot and irradiation time. The results are compared with the available experimental data reported in the literature. The volumetric model provides an assessment of temperature distribution in both the vertical and horizontal axis. Laser irradiation at sufficiently high fluence can be used to create a solid-state phase change on the surface. Primary calculations show that the temperature profile has a Gaussian distribution in horizontal x and y-axis and presents an exponentially decreasing in the horizontal and vertical depth directions.

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Analysis of temperature and surface hardening of low carbon thin steel sheets using Yb-fiber laser

Cited by 31 publications

References 17 publications

Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes

Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes

Tempering Effects of Multitrack Laser Surface Heat Treatment of AISI 1045 Steel

Modeling the Temperature Distribution During Laser Hardening Process

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