Real time synchrotron X-ray observations of solidification in hypoeutectic Al-Si alloys

Kazuhiro Nogita, Hideyuki Yasuda, Arvind Prasad, Stuart D. McDonald, Tomoya Nagira, Noriaki Nakatsuka, Kentaro Uesugi, David H. Stjohn

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

This paper demonstrates how recent advances in synchrotron technology have allowed for the real-time X-ray imaging of solidification in Al-Si alloys, despite the small difference in atomic number of these elements. The experiments performed at the SPring-8 synchrotron, involved imaging the solidification of Al-1wt.%Si and Al-4wt.%Si alloys under a low-temperature gradient and a cooling rate of around 0.3 C/s. The nucleation and growth of the primary aluminum grains as well as the onset of eutectic solidification were clearly observed. In the alloys containing Al-4wt.%Si, contrast was sufficient to characterize the nucleation rate and growth velocity of the aluminum grains. The importance of improving observation of solidification in the Al-Si system by increasing the time resolution during critical events is discussed.

Original languageEnglish
Pages (from-to)134-140
Number of pages7
JournalMaterials Characterization
Volume85
DOIs
Publication statusPublished - Oct 14 2013

Fingerprint

Synchrotrons
solidification
Solidification
synchrotrons
X rays
Aluminum
Nucleation
x rays
nucleation
aluminum
Imaging techniques
eutectics
Thermal gradients
Eutectics
temperature gradients
Cooling
cooling
Experiments

All Science Journal Classification (ASJC) codes

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

Cite this

Nogita, K., Yasuda, H., Prasad, A., McDonald, S. D., Nagira, T., Nakatsuka, N., ... Stjohn, D. H. (2013). Real time synchrotron X-ray observations of solidification in hypoeutectic Al-Si alloys. Materials Characterization, 85, 134-140. https://doi.org/10.1016/j.matchar.2013.08.015

Real time synchrotron X-ray observations of solidification in hypoeutectic Al-Si alloys. / Nogita, Kazuhiro; Yasuda, Hideyuki; Prasad, Arvind; McDonald, Stuart D.; Nagira, Tomoya; Nakatsuka, Noriaki; Uesugi, Kentaro; Stjohn, David H.

In: Materials Characterization, Vol. 85, 14.10.2013, p. 134-140.

Research output: Contribution to journalArticle

Nogita, K, Yasuda, H, Prasad, A, McDonald, SD, Nagira, T, Nakatsuka, N, Uesugi, K & Stjohn, DH 2013, 'Real time synchrotron X-ray observations of solidification in hypoeutectic Al-Si alloys', Materials Characterization, vol. 85, pp. 134-140. https://doi.org/10.1016/j.matchar.2013.08.015
Nogita, Kazuhiro ; Yasuda, Hideyuki ; Prasad, Arvind ; McDonald, Stuart D. ; Nagira, Tomoya ; Nakatsuka, Noriaki ; Uesugi, Kentaro ; Stjohn, David H. / Real time synchrotron X-ray observations of solidification in hypoeutectic Al-Si alloys. In: Materials Characterization. 2013 ; Vol. 85. pp. 134-140.
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