Influence of dispersed <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:mi>β</mml:mi></mml:math> phase on local deformation pattern in mill-annealed Ti-Fe-O alloy under dwell fatigue loading

Grain-scale dwell fatigue behavior in Ti-Fe-O alloy is elucidated, with attention focused on the stress redistribution phenomenon that occurs within soft-hard grain combination. Elastoplastic properties of β phase are determined using nanoindentation and crystal plasticity modeling. On this basis, role intergranular lath evaluated. Redistribution from soft to hard α inhibited presence during period. Meanwhile, peak enhanced. This may result competition two failure modes at high state.