Quantitative assessment of liquid Ga penetration into an aluminium alloy by high-resolution X-ray tomography

T. Ohgaki, H. Toda, I. Sinclair, J. Y. Buffière, W. Ludwig, T. Kobayashi, M. Niinomi, T. Akahori

研究成果: Contribution to journalArticle査読

19 被引用数 (Scopus)

抄録

We have evaluated the liquid Ga penetration into an aluminium alloy by high-resolution X-ray tomography. The 3D visualization of a crack together with its surrounding grain structure was performed with the help of the Ga penetration technique. It is found that the advance directions of the crack-tip were strongly influenced by the grain microstructure and the branching of the crack is affected by grain distribution. In this study, the liquid Ga not only acts as a contrast agent for grain boundaries, but also expands the volume of the Al alloy due to Ga diffusion and associated processes. The 3D strain between the grains has been determined by microstructural gauging technique, which uses micropores as marker points. The 3D expansion of the sample volume, the volume reduction of micropores and the brittle fracture were evidently observed.

本文言語英語
ページ(範囲)261-267
ページ数7
ジャーナルMaterials Science and Engineering A
406
1-2
DOI
出版ステータス出版済み - 10 15 2005
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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