Development of fully automated serial-sectioning 3D microscope and topological approach to pearlite and dual-phase microstructure in steels

Yoshitaka Adachi, Naoko Sato, Mayumi Ojima, Makoto Nakayama, Yuan Tsung Wang

研究成果: Conference contribution

10 被引用数 (Scopus)

抄録

Using a newly developed fully automated serial-sectioning three-dimensional (3D) microscope, Genus-3D, and a conventional dual-beam SEM, we examined ferrite-martensite dual-phase and eutectoid pearlite microstructures. In particular, we consider the topology and differential geometry. Genus, Euler characteristics, Gaussian curvature, and mean curvatures were obtained from 3D reconstructions. A variation in the martensite morphology in dual-phase steel, i.e., connectivity, was examined to understand the ductile fracture mechanism. In addition, we investigated the 3D morphological variation of lamellar cementite in pearlite during spheroidizing. This 3D observation revealed many holes and fissures in cementite lamellae, which potentially accelerate the spheroidization. The disintegration of lamellar structure into particles was discussed with respect to surface area change per unit volume and local surface morphology (i.e., curvature).

本文言語English
ホスト出版物のタイトル1st International Conference on 3D Materials Science 2012, 3DMS 2012
出版社John Wiley and Sons Inc.
ページ37-42
ページ数6
ISBN(印刷版)9781627489331
DOI
出版ステータスPublished - 2012
外部発表はい
イベント1st International Conference on 3D Materials Science 2012, 3DMS 2012 - Seven Springs, PA, United States
継続期間: 2012 7月 82012 7月 12

出版物シリーズ

名前1st International Conference on 3D Materials Science 2012, 3DMS 2012

Conference

Conference1st International Conference on 3D Materials Science 2012, 3DMS 2012
国/地域United States
CitySeven Springs, PA
Period12/7/812/7/12

ASJC Scopus subject areas

  • 材料力学

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