2024-03-29T06:32:30Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02001947
2023-10-10T04:52:08Z
320:321:322
Scale-bridging analysis of heterogeneous deformation behavior in austenitic stainless steel
Yamamoto, Koki
Ogawa, Toshio
Wang, Zhilei
Adachi, Yoshitaka
open access
© 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
In this study, scale-bridging analysis of heterogeneous deformation behavior in SUS310S austenitic stainless steel was conducted using X-ray line profile analysis, digital image correlation (DIC), and transmission electron microscopy (TEM). Specimens were prepared using tensile strain of 3%–40% at 298 ± 2 K. According to the X-ray line profile analysis, increasing strain increased dislocation density and decreased crystallite size. Furthermore, using DIC, low- and high-strain regions were observed in the early stages of deformation. TEM analysis showed that dislocations in the low-strain region were rarely tangled, while in the high-strain region, tangled dislocation and increased dislocation density were observed. TEM analysis also demonstrated that the formation of dislocation cells was promoted in the later stages of deformation, and the size of dislocation cells decreased as the strain increased. Moreover, we showed quantitative relationships between dislocation density, dislocation cell size, and crystallite size based on our findings.
Elsevier
2023-09-15
2021-09-15
eng
journal article
AM
http://hdl.handle.net/2237/0002001947
https://nagoya.repo.nii.ac.jp/records/2001947
https://doi.org/10.1016/j.matlet.2021.130074
0167-577X
Materials Letters
299
130074
https://nagoya.repo.nii.ac.jp/record/2001947/files/Materials_Letters.pdf
application/pdf
595 KB
2023-09-15