Material Flow in Aluminum Friction Stir Welds
A detailed examination of the texture evolution occurring within a friction stir weld inAA2195 reveals features that are not consistent with current models of material ow in frictionstir welds. While the deposited weld is dominated by a B ideal shear texture component, thistexture periodically alternates with a B texture, indicating a reversal in the sense of the sheardeformation. In addition, the observed rotation of the orientation of these shear textures, andtheir replacement by a distinct, new shear texture orientation to correct for the misorientationthat develops, reveals a heretofore unobserved characteristic of friction stir welds that providesfurther details about material ow during friction stir welding.
T. Chandra, M. Ionescu and D. Mantovani
R. W. Fonda et al., "Material Flow in Aluminum Friction Stir Welds", Materials Science Forum, Vols. 706-709, pp. 983-989, 2012