# Fileset

[111_TETSU-2024-115_1.pdf](https://mdr.nims.go.jp/filesets/57101feb-4d60-40ac-ac7e-b9a903125491/download)

## Creator

[Tomotaka Hatakeyama](https://orcid.org/0000-0002-2904-8177), [Shuntaro Ida](https://orcid.org/0000-0002-3641-3099), [Kota Sawada](https://orcid.org/0000-0001-7780-1648), Kyosuke Yoshimi

## Rights

[Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International](https://creativecommons.org/licenses/by-nc-nd/4.0/)

## Other metadata

[Microstructure Development during Creep Deformation of 9Cr–1Mo–V–Nb Steel with Excess Nitrogen Introduced by Solution Nitriding – Multidimensional Scatter Diagram Analysis of STEM-EDS Maps by Machine Learning –](https://mdr.nims.go.jp/datasets/e259225d-39ad-4e72-bb8d-99b427ca929d)

## Fulltext

鉄と鋼 Tetsu-to-Hagané     Supporting Information   固相窒素吸収法により窒素を導入した 9Cr-1Mo-V-Nb鋼のクリープ中の組織変化 ―機械学習による STEM-EDSマップの多次元散布図解析― Microstructure development during creep deformation of 9Cr-1Mo-V-Nb steel with excess nitrogen introduced by solution nitriding – Multidimensional scatter diagram analysis of STEM-EDS maps by machine learning –  畠山 友孝 1)*, 井田 駿太郎 2)**, 澤田 浩太 1), 吉見 享祐 2) Tomotaka HATAKEYAMA1)*, Shuntaro IDA2), Kota SAWADA1), Kyosuke YOSHIMI2)   1) 国立研究開発法人 物質・材料研究機構 構造材料研究センター Research Center for Structural Materials, National Institute for Materials Science 2) 東北大学大学院 工学研究科 知能デバイス材料学専攻 Department of Materials Science, Graduate School of Engineering, Tohoku University   * Corresponding author   E-mail: hatakeyama.tomotaka@nims.go.jp Address: 1-2-1, Sengen, Tsukuba, Ibaraki, 305-0047, Japan  **現所属：一般社団法人ファインセラミックスセンター 材料技術研究所  Materials Research and Development Laboratory, Japan Fine Ceramics Center   Figure S1 (a) Bright field STEM image and STEM-EDS mapping for (b) V-K, (c) Cr-K, (d) Nb-K, and (e) Mo-L of the as-received T91 (MGD heat). The resolution of the mapping is 128x128 with a pixel size of approximately 35x35 nm2.   Figure S2 Scatter diagrams of the X-ray intensity of (a) Mo-Cr, (b) V-Cr, (c) Nb-Cr obtained from STEM-EDS maps of the as-received MGD heat and (d)-(f) the results of the clustering.   Figure S3 (a) Clustering results of the precipitation behavior of as-received MGD heat and (b) bright field STEM image overlaid on the clustering results. Average diameter of M23C6 and MX was measured to be 120 and 53 nm, respectively. Number density of M23C6 and MX was measured to be 5.4 and 6.2 µm-2, respectively.