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In situ Resource Utilization for Processing of Metal Alloys on Lunar and Mars BasesCurrent plans for practical missions leading to a sustained human presence on our Moon and Mars rely on utilizing their in situ resources. Initially, resource availability must be assessed followed by the development of economically acceptable and technically feasible extractive processes. In regard to metals processing and fabrication, the lower gravity level on the Moon (0.125 g) and Mars (0.369 g) will dramatically change the presently accepted hierarchy of materials in terms of specific properties, a factor which must be understood and exploited. Furthermore, significant changes are expected in the behavior of liquid metals during processing. In metal casting, for example, mold filling and associated solidification processes have to be reevaluated. Finally, microstructural development and therefore material properties, presently being documented through ongoing research in microgravity science and applications, needs to be understood and scaled to the reduced gravity environments. These and other issues are addressed in this paper.
Document ID
19990104339
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Proceedings
Authors
Stefanescu, D. M.
(Alabama Univ. Tuscaloosa, AL United States)
Grugel, R. N.
(Universities Space Research Association Huntsville, AL United States)
Curreri, P. A.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1998
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Proceedings of American Society of Civil Engineers Conference
Location: Albuquerque, NM
Country: United States
Start Date: April 26, 1998
End Date: April 30, 1998
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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