Shyamal, S., Das, S. R., Jaskari, M., & Sahu, P. (2022). Evolution of deformation microstructure in a coarse-grained Fe-Mn-Al-C steel under bending fatigue. Materials Letters, 327, 133006. https://doi.org/10.1016/j.matlet.2022.133006
Evolution of deformation microstructure in a coarse-grained Fe-Mn-Al-C steel under bending fatigue
|Author:||Shyamal, S.1; Das, S.R.1; Jaskari, M.2;|
1Department of Physics, Jadavpur University, Kolkata 700 032, India
2Kerttu Saalasti Institute, University of Oulu, FIN 85500, Finland
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2023041436722
|Publish Date:|| 2024-08-13
Microstructure evolution during cyclic deformation of a coarse-grained (∼25 μm) high-Mn steel under high-cycle bending fatigue at room temperature is reported. Vickers microhardness initially increased until 10,000 cycles indicating cyclic hardening but almost saturated at prolonged cycling. The cyclic deformation of austenite leads to formation of perfect dislocations and stacking faults, as well as shear bands in the pre-saturation stage, while the formation of minor amount of ∊-martensite was observed at intersections of shear bands at the saturation stage. Dislocation densities estimated by X-ray diffraction were relatively low ∼1014 m−2.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
SS and SRD acknowledge funding from Government of India under UGC-JRF scheme (Grant no. 521511) and DST/Inspire scheme (Grant no. IF170882), respectively.
© 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/