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An optical study of grain formation: Casting and solidification technology (2-IML-1)By studying the unidirectional growth of a metal-model material in microgravity, an attempt is made to characterize alloy solidification. Using holograms and supporting temperature measurements obtained during processing in the Fluids Experiment System (FES), the solute and thermal fields associated with the dendrite growth front and extraneous nucleation will be measured and compared to a theoretical (computational) model. Ground based supporting experiments include particle tracking to measure the velocity fields, and optical phase shift techniques (confocal optical signal processing, interferometry, and Schlieren) to study thermal and solutal fields.
Document ID
19920014388
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Mccay, Mary H. (Tennessee Univ. Space Inst. Tullahoma, TN, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1992
Publication Information
Publication: NASA. Marshall Space Flight Center, First International Microgravity Laboratory Experiment Descriptions
Subject Category
Materials Processing
Accession Number
92N23631
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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