Friction stir welding (FSW)is a solid state joining process that induces large deformations and pronounced heating of two workpieces to accomplish a bond between them.This severe thermomechanical process induces substantial alteration of the microstructure,inducing modification of the crystallographic texture,hardness and grain size.A simplified FSW process based on a 2-dimensional Eulerian finite element formulation is presented.The formulation couples equations governing the motion,temperature and state evolution to provide a description of the complex thermomechanical process.Texture evolution is predicted using the computed velocity gradients along streamlines of the flow field together with a model for polycrystal plasticity.
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