| Abstract Scope |
Dislocation cross-slip is a crucial mechanism for enhancing tensile ductility of metallic materials. However, due to the competition of planar slips, its activation has been rarely reported in the deformation of bulk near-α titanium alloys, which are a group of materials extensively used in aerospace applications. In this presentation, I will present the activation of massive cross-slips in some α grains during the onset yielding of bulk Ti-6.5Al-2Mo-Zr-V alloy, a near-α titanium alloy, as evidenced by prominent surface wavy slips. This demonstrates that cross-slip in certain α grains outweighs planar slips. This study provides insights on the activity of cross-slips and its competition with planar slips, and particularly, their effects on local straining and failure of bulk near-α titanium alloys. |