Development of an Automatic Fabrication System for Cast Glassy Alloys

Abstract

The developed automatic fabrication system comprised three component functions: weighing, alloying, and casting. The measurement error of automatic weighing specimen was about less 1 pct for Zr-based master alloys (approximately 30 g). Especially, sufficient stirrer effect of arc-melting ingot for homogeneity can be achieved by the development of sinusoidal arcing and applying magnetic field. In order to achieve superior homogeneity of the glass structure with no secondary phase (i.e., an intermetallic compound with a high melting temperature), a prealloying process should be advisable. In this study, high reliability of the density and mechanical properties of automatic processed cast glassy alloys (CGAs) was successfully obtained. The developed automatic fabrication process has a potential to accelerate the industrial application of CGAs in the near future.

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Acknowledgements

The author thanks I. Narita, K. Ohmura, and Y. Murakami for their skillful technical support in this study. The author also greatly thanks M. Sato, T. Yamaguchi, and M. Kobayashi at YKK Co. Ltd., T. Yokoyama, Y. Kawai, M. Kameyama, and Y. Chiba at DIAVAC Ltd., M. Nagaoka and M. Hisa at Nisshin Giken Co. Ltd., and K. Suzuki, N. Kubo, and K. Iryouda at GES Co. Ltd. for the construction of the automatic fabrication system. This research was funded in part by a JSPS KAKENHI Grant-in-Aid for Scientific Research (C) Project No. 23560857, New Energy and Industrial Technology Development Organization (NEDO), a research project named “Cast Glassy Alloy Inorganic Materials Joining Technology Development” in Japan, a Grant-in-aid for a research and development project on advanced cast glassy alloys from the Institute for Materials Research, and WPI at Tohoku University.

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Correspondence to Yoshihiko Yokoyama.

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Manuscript submitted September 4, 2014.

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Yokoyama, Y. Development of an Automatic Fabrication System for Cast Glassy Alloys. Metall Mater Trans B 46, 893–905 (2015). https://doi.org/10.1007/s11663-014-0282-x

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Keywords

  • Master Alloy
  • Molten Alloy
  • Glassy Alloy
  • Crystalline Particle
  • Alloy Process