A new approach to control and optimize the laser surface heat treatment of materials

Telrandhe, Sagar V.; Jayabalan, Bhagyaraj; Mishra, Sushil; Karagadde, Shyamprasad

doi:10.1016/j.jmatprotec.2018.07.017

Cited by 13 publications

(2 citation statements)

References 21 publications

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“…The complexity of the liquid media laser processing phenomena is evident from some of the studies found in the literature. The finite element analysis was used by Telrandhe [29] to predict the depth of the heat-treated zone for a moving laser heat source. Sehyeok and Hyungson [30] used a 3D thermal simulation to predict the hardness distribution as the function of the temperature gradient during laser heat treatment of H13 high speed steel tools with a 94.4% accuracy.…”

Section: Introductionmentioning

confidence: 99%

Functional Surfaces via Laser Processing in Nickel Acetate Solution

et al. 2023

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This study presents a novel laser processing technique in a liquid media to enhance the surface mechanical properties of a material, by thermal impact and micro-alloying at the subsurface level. An aqueous solution of nickel acetate (15% wt.) was used as liquid media for laser processing of C45E steel. A pulsed laser TRUMPH Truepulse 556 coupled to a PRECITEC 200 mm focal length optical system, manipulated by a robotic arm, was employed for the under-liquid micro-processing. The study’s novelty lies in the diffusion of nickel in the C45E steel samples, resulting from the addition of nickel acetate to the liquid media. Micro-alloying and phase transformation were achieved up to a 30 µm depth from the surface. The laser micro-processed surface morphology was analysed using optical and scanning electron microscopy. Energy dispersive spectroscopy and X-ray diffraction were used to determine the chemical composition and structural development, respectively. The microstructure refinement was observed, along with the development of nickel-rich compounds at the subsurface level, contributing to an improvement of the micro and nanoscale hardness and elastic modulus (230 GPa). The laser-treated surface exhibited an enhancement of microhardness from 250 to 660 HV0.03 and an improvement of more than 50% in corrosion rate.

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Section: Introductionmentioning

confidence: 99%

Functional Surfaces via Laser Processing in Nickel Acetate Solution

et al. 2023

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“…Lenuda et al [19] exploited secondary hardening during the tempering of tool steel by a laser source. Telranhdhe et al [20], on the contrary, made use of laser surface treatments to soften the microstructure and thus improve the machinability of Ti alloys. In all these processes, a homogenous microstructure is developed along the material sur-face and microstructure varies only in the direction of the material bulk.…”

Section: Introductionmentioning

confidence: 99%