Paper Title:
Modeling of Diffusion Saturation of (α + β) Titanium Alloys by Nitrogen in the Rarefied Medium
  Abstract

The diffusion saturation of (α + β) titanium alloy by nitrogen under rarefied medium taking into account the peculiarities of interaction both at the interface and in the metal core is modeled. The corresponding diffusion problem using the diffusion equations in the medium consisting two families of diffusion paths and non-stationary boundary condition at interface is analytically solved. The effect of the temperature and time parameters, volumetric quantity of β- phase on the kinetics of nitriding is estimated. It is established that with the increase of isothermal exposure temperature and quantity of β-phase the surface saturation by nitrogen decreases. It is caused by more intensive nitrogen penetration into bulk and formation of a deeper diffusion zone.

  Info
Periodical
Edited by
D.Beke, A.Gusak, G.Murch, J.Philibert
Pages
33-38
DOI
10.4028/www.scientific.net/DDF.277.33
Citation
Y. Matychak, V. Fedirko, I. Pohreljuk, O. Yaskiv, O. Tkachuk, "Modeling of Diffusion Saturation of (α + β) Titanium Alloys by Nitrogen in the Rarefied Medium ", Defect and Diffusion Forum, Vol. 277, pp. 33-38, 2008
Online since
April 2008
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