X-ray imaging of formation and growth of spheroidal graphite in ductile cast Iron

H. Yasuda, A. Sugiyama, C. Kiattisaksri, K. Morishita, T. Nagira, M. Yoshiya, K. Uesugi, A. Takeuch

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

Time-resolved and in-situ observations using synchrotron radiation X-rays were performed to observe solidification of cast iron (CE=4.5, 0.02mass%Mg). Morphology of graphite particles was influenced by specimen holder material. In the Al2O3 holder, graphite particles were spheroidal at the beginning and then deviated from the spheroidal shape. In addition, the coupled eutectic solidification of austenite and graphite occurred at the final stage. In contrast, the divorced eutectic solidification, in which graphite particles and austenite dendrites independently grew, was selected until the end of solidification in MgO holder. Spheroidal graphite particles were engulfed by austenite. Consequently, typical microstructure observed in ductile cast iron was reproduced in the in-situ observation. The results suggested that oxygen potential, which was determined by Al2O3 or MgO (specimen holder) in the observations, could be an important factor for the selection of eutectic growth mode and graphite morphology.

本文言語英語
ホスト出版物のタイトルScience and Processing of Cast Iron XI
編集者Attila Dioszegi, Vasile Lucian Diaconu, Anders E.W. Jarfors
出版社Trans Tech Publications Ltd
ページ104-109
ページ数6
ISBN(印刷版)9783035710557
DOI
出版ステータス出版済み - 2018
外部発表はい
イベント11th International Symposium on the Science and Processing of Cast Iron, SPCI-XI 2017 - Jonkoping, スウェーデン
継続期間: 9 4 20179 7 2017

出版物シリーズ

名前Materials Science Forum
925 MSF
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

その他

その他11th International Symposium on the Science and Processing of Cast Iron, SPCI-XI 2017
Countryスウェーデン
CityJonkoping
Period9/4/179/7/17

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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