About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
G-24: Influence of the Loading Frequency on the Fatigue Behavior of Different Steels |
Author(s) |
Karl-Heinz Lang, Steffen Becker |
On-Site Speaker (Planned) |
Karl-Heinz Lang |
Abstract Scope |
The influence of the loading frequency on the fatigue behavior of steels is contradictorily discussed in literature. Especially for high-strength states often no influence is reported, but for low-strength states, high sensitivity is sometimes observed. Basically, two effects have to be considered: the strain rate dependence of plastic deformation and the heat dissipation due to plastic deformation. To separate these two effects, two different automotive steels, normalized 38MnSiV5 type as well as quenched and tempered 50CrV4 type steel, have been investigated in the high cycle fatigue regime. The tests were conducted at the same stress amplitude at R = -1. The loading frequencies ranged from 1 Hz up to 970 Hz. Additionally, temperature measurements at the surface of the specimens have been carried out to detect self heating effects during testing. The results show a significant frequency effect for both steels, whereas it is more pronounced for the lower strength 38MnSiV5 type steel. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |