Graded deformation in an Fe-Mn-Al-C steel under bending fatigue
Shyamal, S.; Das, S.R.; Jaskari, M.; Porter, D.A.; Karjalainen, L.P.; Sahu, P. (2020-11-19)
Shyamal, S., Das, S. R., Jaskari, M., Porter, D. A., Karjalainen, L. P., & Sahu, P. (2021). Graded deformation in an Fe-Mn-Al-C steel under bending fatigue. Materials Letters, 285, 129002. https://doi.org/10.1016/j.matlet.2020.129002
© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/.
https://creativecommons.org/licenses/by-nc-nd/4.0/
https://urn.fi/URN:NBN:fi-fe2023041736876
Tiivistelmä
Abstract
Cyclic behavior of a high-Mn austenitic steel with fine (~2 µm) and larger (~5 µm) grains was investigated under high-cycle bending fatigue at room temperature. Microhardness initially increased as a sign of cyclic hardening until 20,000 cycles and saturated thereafter. Deformation mechanisms varied widely in grains, depending on their sizes. Stacking faults were predominant in the fine grains, while interconnected dislocation cells were observed within the larger grains. Dislocation densities estimated by X-ray diffraction were relatively low ~1014 m−2.
Kokoelmat
- Avoin saatavuus [31988]