Numerical analysis of residual stresses near a weld in the course of electron-beam welding of thick plates

Author： Skal's'kyi V.  

Publisher： Springer Publishing Company

ISSN： 1068-820X

Source： Materials Science, Vol.48, Iss.3, 2012-11, pp. : 355-363

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Abstract

We propose a method for the determination of the triaxial stressed state in the process of butt welding by a rapidly moving heat source and construct three-dimensional distributions of the components of the stress field for welded joints of 1201-Т aluminum alloy with different thicknesses made by the electronbeam welding. It is shown that the residual transverse σ xx and axial σ yy stresses are maximum and constitute 80-90% of the ultimate strength of the metal. It is shown that, for plates of smaller thickness, the residual stresses are higher due the smaller sizes of the heat-and-deformation affected zone.

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