Determining the heat flux distribution of laminar plasma jet impinging upon a flat surface: An indirect method using surface transformation hardening

Xiang, Yong; Yu, Deping; Liu, Fangyuan; Lv, Can; Yao, Jin

doi:10.1016/j.ijheatmasstransfer.2017.11.050

Cited by 14 publications

(2 citation statements)

References 34 publications

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“…Gaussian distribution model of the laser beam is shown in Figure 2 [20][21][22]. As shown in Figure 2(a) in Gaussian model laser heat input at the center of the laser beam is more than the corners and by moving from the center toward the corners, energy intensity of laser decreases.…”

Section: -1 Geometrical Dimensions Of the Hardened Areamentioning

confidence: 99%

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Nd:YAG laser hardening of AISI 410 stainless steel: Microstructural evaluation, mechanical properties, and corrosion behavior

Moradi

Ghorbani

Moghadam

et al. 2019

Journal of Alloys and Compounds

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In this paper, a pulsed Nd:YAG laser with a maximum power of 700 W, was utilized to investigate the laser surface hardening of AISI 410 martensitic stainless steel. Focal point position, scanning speed and pulse width were considered as process variable parameters. Corrosion behavior of laser surface hardened samples were investigated by IVIUMSTAT apparatus in a 3.5wt% NaCl solution. Maximum microhardness, depth, and width of hardness and percentage of ferrite phase of metallographic and FESEM pictures were evaluated. Results show that surface hardness increased up to 762 HV. Results also reveal that the laser focal point position and pulse width are effective parameters in laser hardening process. In potentiodynamic polarization tests potential stated to increase at a rate of 1 mV/s from -0.4 V to 0.2 V. Results indicate that the corrosion resistance increased due to laser hardening process.

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Section: -1 Geometrical Dimensions Of the Hardened Areamentioning

confidence: 99%

“…Schematic of Gaussian distribution b) normal Gaussian distribution c) schematic of Nd:YAG laser pulse diagram[20][21][22] …”

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confidence: 99%