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Proceedings Paper

Development of uniform microstructures in immiscible alloys by processing in a low-gravity environment
Author(s): Richard N. Grugel; Lucien N. Brush
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Paper Abstract

Highly segregated macrostructures tend to develop during processing hypermonotectic alloys because of the density difference existing between the two liquid phases. The approximate 4-6 seconds of low-gravity provided by Marshall Space FLight Center's 105 meter drop tube was utilized to minimize density-driven separation and promote uniform microstructures in hypermonotectic Ag-Ni and Ag-Mn alloys. For the Ag-Ni alloys a numerical model was developed to track heat flow and solidification of the bi-metal drop configuration. Results, potential applications, and future work are presented.

Paper Details

Date Published: 12 July 1996
PDF: 5 pages
Proc. SPIE 2809, Space Processing of Materials, (12 July 1996); doi: 10.1117/12.244338
Show Author Affiliations
Richard N. Grugel, Universities Space Research Association and NASA Marshall Space Flight Ctr. (United States)
Lucien N. Brush, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 2809:
Space Processing of Materials
Narayanan Ramachandran, Editor(s)

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