Texture development in the stir zone of near-alpha titanium friction stir welds

摘要

Shear textures in the stirzone of a near-alpha-titanium friction stir weld were examined by electron backscatter diffraction. The texture matches that of a D_2(1 12)[111] bcc simple shear texture that was transformed to hcp according to the Burgers orientation relationship, which aligns {110}_(bcc) with {000 l}_(hcp), although there is also evidence of a P_1 hcp shear texture component. Deformation therefore occurred predominantly above the beta transus, and the a texture was inherited from a simple shear texture of the beta phase. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.