Development of Fatigue Damages in a Pseudo-α-Titanium Alloy after Intense Thermomechanical Treatment
- Authors: Bagmutov V.P.1, Vodop’yanov V.I.1, Zakharov I.N.1, Vdovenko A.V.1, Romanenko M.D.1, Chekunov V.V.1
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Affiliations:
- Volgograd State Technical University
- Issue: Vol 2019, No 5 (2019)
- Pages: 548-555
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/173262
- DOI: https://doi.org/10.1134/S0036029519050033
- ID: 173262
Cite item
Abstract
The influence of surface hardening by electrochemical treatment, abrasive-free ultrasonic finishing treatment, and their combination on the accumulation of fatigue damages in a pseudo-α-titanium alloy (PT3V) during pulsed cyclic loading in a transition stage of fatigue (104–105 cycles) is studied. The fatigue damage accumulation kinetics is estimated using the inelasticity parameters of a specimen (hysteresis loop width, cyclic creep, rigidity (compliance)) during cyclic loading, an analysis of fracture surfaces, and the crack growth rate. The state of surface layer is shown to play a key role in the change in the fatigue life of laboratory specimens. The type of surface hardening only weakly affects the accumulation of fatigue damages at the stages of stable crack growth and rupture.
About the authors
V. P. Bagmutov
Volgograd State Technical University
Author for correspondence.
Email: sopromat@vstu.ru
Russian Federation, Volgograd, 400006
V. I. Vodop’yanov
Volgograd State Technical University
Email: sopromat@vstu.ru
Russian Federation, Volgograd, 400006
I. N. Zakharov
Volgograd State Technical University
Email: sopromat@vstu.ru
Russian Federation, Volgograd, 400006
A. V. Vdovenko
Volgograd State Technical University
Email: sopromat@vstu.ru
Russian Federation, Volgograd, 400006
M. D. Romanenko
Volgograd State Technical University
Email: sopromat@vstu.ru
Russian Federation, Volgograd, 400006
V. V. Chekunov
Volgograd State Technical University
Email: sopromat@vstu.ru
Russian Federation, Volgograd, 400006