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- Title
A Study of Fatigue Crack Growth Rate in Steels in Relation to Crack-Tip Plastic Deformation and Fracture. Part 1. Test Methods and Results for 10GN2MFA Steel.
- Authors
Tsybanev, G. V.; Gopkalo, A. P.; Kurash, Yu. P.; Novikov, A. I.
- Abstract
The methods for low-cycle fatigue testing and cyclic crack growth testing of 10GN2MFA steel at 20 and 270°C are described. Based on test results, fatigue crack growth rate curves are plotted and the characteristics of low-cycle plastic deformation and fracture are found. A difference in the kinetics of low-cycle plastic deformation is shown – the cyclic softening at 20°C and hardening at 270°C – which has an influence on fatigue life and fatigue crack growth resistance of this steel. The last-mentioned characteristic has been studied using two test methods: (i) with a decreasing stress intensity factor range and (ii) with a constant magnitude of load.
- Subjects
MATERIAL plasticity; STEEL fatigue; MATERIAL fatigue; FATIGUE crack growth; TEST methods; FRACTURE mechanics; FATIGUE cracks
- Publication
Strength of Materials, 2020, Vol 52, Issue 2, p228
- ISSN
0039-2316
- Publication type
Article
- DOI
10.1007/s11223-020-00169-8