Vladimir Oborin https://orcid.org/0000-0003-2836-2073 Aleksandr Balakhnin Oleg Naimark https://orcid.org/0000-0001-6537-1177 Yuri Gornostyrev https://orcid.org/0000-0001-7765-9805 Vladimir Pushin Nataliya Kuranova https://orcid.org/0000-0002-5330-7909 Dimitrii Rasposienko Aleksey Svirid Aleksey Uksusnikov


The role of structural mechanisms responsible for the consequent staging of damage-failure transition as the combination and continuity of ductile and creep kinetics of the structure evolution and the modeling in dwell fatigue regime. Damage-failure transition is considered as critical phenomena, the structural-scaling transition, when the damage develops as specific phase with characteristic stages: nucleation of new phase and the phase growth kinetics. In the case of dwell fatigue, the nucleation stage is associated with slip localization, faceting, voids and microcrack initiation; the phase growth kinetics has the relation to specific non-linearity of the free energy release responsible for the staging of damage-failure transition. Statistically based phenomenological model of damage-failure transition specified the links of macroscopic material parameters with structural parameters responsible for the influence of microstructure on the structure sensitive mechanical properties. The developed conception of modeling of Ti alloys based on the duality of damage kinetics in dwell fatigue loads allowed us to propose the strategy of structural study to provide in perspective the links of structural parameters of /phases with phenomenological parameters responsible for different mechanisms of damage accumulation at LCF and stress hold regimes.


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    SI: IGF27 - 27th International Conference on Fracture and Structural Integrity

    How to Cite

    Oborin, V., Balakhnin, A., Naimark, O., Gornostyrev, Y., Pushin, V., Kuranova, N., … Uksusnikov, A. (2023). Damage-failure transition in titanium alloy Ti-6Al-4V under dwell fatigue loads. Frattura Ed Integrità Strutturale, 18(67), 217–230. https://doi.org/10.3221/IGF-ESIS.67.16

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