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 –)