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Low gravity solidification structures in the tin-15 wt pct lead and tin-3 wt pct bismuth alloysThe tin-15 wt pct lead and tin-3 wt pct bismuth alloys have been solidified in the low-gravity environment provided by the Space Processing Applications Rocket (SPAR), on the KC-135 airplane, and at high 'g' levels in a centrifuge furnace. In each case the resultant cast structure was significantly different from that obtained in ground based experiments. Earlier low-gravity studies with the metal-model system NH4Cl-H2O presaged these results. This paper presents and discusses the influence of changes in the gravity force on the grain structure of these materials.
Document ID
19830062096
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Johnston, M. H.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Parr, R. A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Astronautics (General)
Meeting Information
Meeting: Materials processing in the reduced gravity environment of space; Annual Meeting
Location: Boston, MA
Start Date: November 16, 1981
End Date: November 18, 1981
Sponsors: NASA
Accession Number
83A43314
Distribution Limits
Public
Copyright
Other

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