Laser short-pulse heating of an aluminum thin film: Energy transfer in electron and lattice sub-systems

Mansoor, Saad Bin; Yilbaş, Bekir Sami

doi:10.1016/j.physb.2015.04.035

Cited by 8 publications

(2 citation statements)

References 19 publications

(27 reference statements)

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“…1995, investigated the phenomena of heat transfer occurring for the laser processing power of 1.10 10 W/m 2 Consequently, the developed formula is the analogous with found for improved formulation hyperbolic heating model [6]. Mansoor et al 2015, The effect on the laser short-pulse temperature was investigated for an aluminium thin film and the energy transfer was calculated using the Boltzman n equation in the film. When they calculate the timedependent change in equilibrium temperature, the laser pulse intensity in the subsystem continues.…”

Section: Introductionmentioning

confidence: 99%

“…When they calculate the timedependent change in equilibrium temperature, the laser pulse intensity in the subsystem continues. However, the equilibrium temperature is different for the electron and lattice subsystems associated with the phonon [10]. Koc et al 2004, examining the 3-D laser heating model on four different materials (tantalum, iron, titanium, nickel) using the electron kinetic theory approach.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Heat Transfer in the Material during Pulsed Laser-Metal Interaction by Using Kinetic Theory

Koç¹,

Baltacıoğlu²

2018

IJAERS

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Nowadays technological developments, the use of lasers in production is increasing and plays an important role due to low cost and high accuracy. The heat transfer, over the course of laser-metal interplay, has a great importance in metal forming. In this study, different types of materials were investigated in order to designate the temperature distributions inside material and on the material surface versus the thermodynamic properties of the material used and then the temperature distributions obtained from the analysis were compared each other. In addition, the heat transfer is occurring during the interaction of the laser power of 1.10 10 W/m 2 and 5.10 10 W/m 2 with laser power intensity in two main groups using different materials these are steel, nickel, tantalum and titanium, and numerical results are obtained using the finite-difference method. In the first step, a solution is obtained by electron kinetic theory according to the basic heat transfer. In the second step, since heat convection is formed after material has reached the melting point. Using electron kinetic theory model for convection solutions have been obtained. Moreover, the temperature distribution that occurs during the laser metal interaction was studied by variation of the time chart and the material depth. As a result of the study, material's surface at the correct temperature of liquid phase change material and increased depth in the direction perpendicular to the electro -kinetic theory approach is further demonstrated by the decrease in the first manner and then remains constant in exponential phase change temperature. In addition to this the analysis results, the substrate temperature increases, the change in phase in the material becomes smaller and smaller.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%