Development of uniform microstructures in immiscible alloys by processing in a low-gravity environment

Richard N. Grugel; Lucien N. Brush

doi:10.1117/12.244338

12 July 1996 Development of uniform microstructures in immiscible alloys by processing in a low-gravity environment

Richard N. Grugel, Lucien N. Brush

Proceedings Volume 2809, Space Processing of Materials; (1996) https://doi.org/10.1117/12.244338
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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.

Citation Download Citation

Richard N. Grugel and Lucien N. Brush "Development of uniform microstructures in immiscible alloys by processing in a low-gravity environment", Proc. SPIE 2809, Space Processing of Materials, (12 July 1996); https://doi.org/10.1117/12.244338

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