Abstract
UDC 621.98.044.7
DOI https://doi.org/10.52577/eom.2026.62.4.66
Using the automated analysis of the backscattered electron diffraction patterns (EBSD), the effect of a pulsed magnetic field on the microstructure and phase composition of a two-phase (α+β) Ti-6Al-4V alloy was studied. The structure parameters (a grain size, boundary misorientation angles, and a local lattice curvature based on the KAM parameter) were evaluated layer by layer up to a depth of 102 μm from the surface. It has been established that magnetic pulse treatment leads to the formation of a fragmented substructure in the surface layer and a significant increase in the geometric density of dislocations. The treatment resulted in a more than twofold decrease in the volume fraction of the β-phase. Those results demonstrate the effectiveness of magnetic pulse treatment for surface hardening of titanium alloys and the formation of gradient structures.
Keywords: titanium alloy, magnetic pulse treatment, strengthening, dislocation density, grain boundary misorientation, grain size, strength.