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Nonsteady thermocapillary mass transfer in the laser alloying of metals

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Abstract

This article examines convective mass transfer of an impurity in a shallow bath of molten metal with allowance for the motion of the fusion front during the laser alloying of metals.

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Abbreviations

r, z, ϕ:

cylindrical coordinates

t:

time

Ti :

temperature of the liquid (i=1) and solid (i=2) phases

q(r):

absorbed energy flux

k:

concentration factor

Tm :

melting point

L:

heat of fusion

ρ:

density

λi, αi :

thermal conductivity and diffusivity

T0 :

initial temperature

η, ν:

absolute and kinematic viscosities of the melt

vr, vz :

projections of the melt velocity on the coordinate axes r and z

p:

pressure

σ:

surface tension

Literature cited

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Authors and Affiliations

  1. A. A. Baikov Institute of Metallurgy, Academy of Sciences of the USSR, Moscow

    A. A. Uglov, I. Yu. Smurov, A. G. Gus'kov & K. I. Tagirov

Authors
  1. A. A. Uglov
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  2. I. Yu. Smurov
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  3. A. G. Gus'kov
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  4. K. I. Tagirov
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Additional information

Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 56, No. 5, pp. 799–805, May, 1989.

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Uglov, A.A., Smurov, I.Y., Gus'kov, A.G. et al. Nonsteady thermocapillary mass transfer in the laser alloying of metals. Journal of Engineering Physics 56, 569–574 (1989). https://doi.org/10.1007/BF01297608

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  • DOI: https://doi.org/10.1007/BF01297608

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