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Characterizations of four specimens processed as a part of the M553 sphere forming experiment performed during the Skylab 1 and 2 flightFour specimens identified as SL-1.3, SL-1.8, SL-1.9 and SL-2.5 were submitted for metallurgical characterization. These specimens had been processed in the M512 Facility as a part of the M553 Sphere Forming Experiment performed during the Skylab 1/2 flight. Three of these specimens, SL-1.3, SL-1.8, and SL-2.5 were designed to be melted completely by the electron beam and detach themselves from their support posts and resolidify while floating free in the near zero gravity and vacuum environment of space. Specimens SL-1.3 and SL-1.8 were completely melted, but it is believed they did not leave their posts before solidifying. Specimen SL-2.5 was only partially melted. Specimen SL-1.9 was to be completely melted and retained on a large sting which was accomplished as planned. The nominal composition of the four specimens was: (1) SL-1.3 - Ni 12% Sn; (2) SL-1.8 - Ni 30% Cu; (3) SL-1.9 - Pure Ni; and (4) SL-2.5 - Pure Ni. These four specimens have been examined according to the Phase B Characterization Plan. The results are discussed and compared with similar characterization analyses run on ground base specimens.
Document ID
19740026765
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Hubbard, J. L.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Johnson, J. W.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Brown, J. L.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1973
Subject Category
Machine Elements And Processes
Report/Patent Number
NASA-CR-129040
Accession Number
74N34878
Funding Number(s)
CONTRACT_GRANT: NAS8-28735
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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