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    Three dimensional finite element modeling of laser cladding of nickel alloy with 1.5wt.% and 3wt.% nano Ceo2 on the low carbon steel 1015

    , Article ; 2011 Conference on Lasers and Electro-Optics: Laser Science to Photonic Applications, CLEO 2011, 1 May 2011 through 6 May 2011, Baltimore, MD , 2011 ; 9781557529107 (ISBN) Fayaz, G. R ; Vaghefi, M ; Zakeri, S. S ; Seyedin, A ; Sharif University of Technology
    Abstract
    Multilayer laser cladding process for the material properties of low carbon steel 1015 for workpiece and nickel alloy with 1.5 wt.% and 3 wt.% nano CeO2 as the powder particles is modeled. Finite Element Method (FEM) solutions of transient heat transfer and mass transfer equations in laser cladding process are presented. Geometry of the deposited material as well as temperature and thermal stress fields across the process area are calculated  

    Three dimensional finite element modeling of laser solid freeform fabrication of cobalt alloy stellite 21 with 1.5% nanoCeO2 on the low carbon steel 1015

    , Article Physics Procedia, 21 September 2010 through 24 September 2010, Erlangen ; Volume 5, Issue PART 2 , 2010 , Pages 405-411 ; 18753884 (ISSN) Fayaz, G. R ; Ebrahimi, A ; Zakeri, S. S ; Sharif University of Technology
    2010
    Abstract
    Our purpose is to model the multilayer laser solid freeform fabrication (LSFF) process for the material properties of low carbon steel 1015 for workpiece and cobalt alloy stellite 21 with 1.5 wt.% nano CeO2 as the powder particles. In this paper, transient heat transfer and mass transfer equations in laser solid freeform fabrication process are solved by Finite Element Method (FEM). In this approach, the geometry of the deposited material, temperature and thermal stress fields across the process area are predicted. For each layer the clad height is computed and computations are done by the use of MATLAB and COMSOL software