Assessment of 3D inhomogeneous microstructure of highly alloyed aluminium foam via dual energy K-edge subtraction imaging

Qiang Zhang, Hiroyuki Toda, Yasutaka Takami, Yoshio Suzuki, Kentaro Uesugi, Masakazu Kobayashi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

X-ray microtomography was used to evaluate the inhomogeneous characteristics of newly-developed Al-Zn-Mg foam. Using the synchrotron K-edge subtraction technique, a highly heterogeneous distribution of Zn was quantified three-dimensionally (3D) in the cell wall of as-cast foam. Time-resolved analysis of the concentration evolution revealed a tendency to a homogeneous Zn distribution as solution time prolonged. This was accompanied by a declined variation in hardness measurement. Other microstructural features after solution treatment, such as number and size distribution of micropores, were also characterised. By utilising various quenching rates, the inhomogeneities in microstructure and compression properties inside the foam were also clarified. Thus, element-sensitive tomography provides a novel solution for the 3D/4D analysis in the study of foams.

Original languageEnglish
Pages (from-to)1853-1871
Number of pages19
JournalPhilosophical Magazine
Volume90
Issue number14
DOIs
Publication statusPublished - May 1 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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