Accession Number : ADA581751


Title :   Computational Modeling of Microstructural-Evolution in AISI 1005 Steel During Gas Metal Arc Butt Welding


Descriptive Note : Journal article


Corporate Author : CLEMSON UNIV SC


Personal Author(s) : Grujicic, M ; Ramaswami, S ; Snipes, J S ; Yavari, R ; Arakere, A ; Yen, C ; Cheeseman, B A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a581751.pdf


Report Date : May 2013


Pagination or Media Count : 17


Abstract : A fully coupled (two-way), transient, thermal-mechanical finite-element procedure is developed to model conventional gas metal arc welding (GMAW) butt-joining process. Two-way thermal-mechanical coupling is achieved by making the mechanical material model of the workpiece and the weld temperature dependent and by allowing the potential work of plastic deformation resulting from large thermal gradients to be dissipated in the form of heat. To account for the heat losses from the weld into the surroundings, heat transfer effects associated with natural convection and radiation to the environment and thermal-heat conduction to the adjacent workpiece material are considered. The procedure is next combined with the basic physical-metallurgy concepts and principles and applied to a prototypical (plain) low-carbon steel (AISI 1005) to predict the distribution of various crystalline phases within the as-welded material microstructure in different fusion zone and heat-affected zone locations, under given GMAW-process parameters. The results obtained are compared with available open-literature experimental data to provide validation/ verification for the proposed GMAW modeling effort.


Descriptors :   *BUTT WELDING , *COMPUTATIONS , *GAS METAL ARC WELDING , FINITE ELEMENT ANALYSIS


Subject Categories : Fabrication Metallurgy
      Numerical Mathematics


Distribution Statement : APPROVED FOR PUBLIC RELEASE