Relation between the fracture laws and the fatigue life of a surface-hardened pseudo-α titanium alloy
- Authors: Bagmutov V.P.1, Vodop’yanov V.I.1, Zakharov I.N.1, Denisevich D.S.1
-
Affiliations:
- Volgograd State Technical University
- Issue: Vol 2016, No 7 (2016)
- Pages: 663-668
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/170691
- DOI: https://doi.org/10.1134/S0036029516070053
- ID: 170691
Cite item
Abstract
The laws of fracture and fatigue life of the PT-3V pseudo-α titanium alloy subjected to surface hardening using electromechanical, ultrasonic, and combined treatment are studied. Fracture mechanisms and the structures of crack nucleation and growth zones are described using the results of metallographic and fractographic analysis of samples after fatigue tests. It is shown that the existence of a thin hardened layer on the sample surface changes the crack nucleation time and the state of fracture surface in the crack nucleation zone. This surface is characterized by signs of brittle or ductile fracture, which substantially affects the fatigue life of the sample.
About the authors
V. P. Bagmutov
Volgograd State Technical University
Author for correspondence.
Email: sopromat@vstu.ru
Russian Federation, pr. Lenina 28, Volgograd, 400066
V. I. Vodop’yanov
Volgograd State Technical University
Email: sopromat@vstu.ru
Russian Federation, pr. Lenina 28, Volgograd, 400066
I. N. Zakharov
Volgograd State Technical University
Email: sopromat@vstu.ru
Russian Federation, pr. Lenina 28, Volgograd, 400066
D. S. Denisevich
Volgograd State Technical University
Email: sopromat@vstu.ru
Russian Federation, pr. Lenina 28, Volgograd, 400066