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In the present investigation, microtexture analysis using electron back-scattered diffraction technique has been performed to study fatigue- and creep-fatigue damages and associated deformation structures in Ti-6Al-4V alloy. Special emphasis has been given to low-angle grain boundary configuration and its possible application as a damage indicator. Damage is mostly present in the form of voids as investigated through scanning electron microscopy. Stored deformation energies have been evaluated for the strain-controlled fatigue-, the stress-controlled fatigue-, and the creep-fatigue-tested samples. Stored deformation energies have also been analyzed vis-à-vis total damage energies to quantify the contribution of damages to various samples. A relation between the stored deformation energy and the applied strain amplitude has been proposed in this study. © 2016, The Minerals, Metals & Materials Society and ASM International.
Journal | Data powered by TypesetMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science |
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Publisher | Data powered by TypesetSpringer Boston |
ISSN | 10735623 |
Open Access | No |