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The Isothermal Dendritic Growth Experiment (IDGE)Dendritic solidification is one of the simplest examples of pattern formation where a structureless melt evolves into a ramified crystalline microstructure; it is a common mode of solidification in many materials, but especially so in metals and alloys. There is considerable engineering interest in dendrites because of the role dendrites play in the determination of microstructure, and thereby in influencing the physical properties of cast metals and alloys. Dendritic solidification provides important examples of non-equilibrium physics, pattern formation dynamics, and models for computational condensed matter and material physics. Current theories of dendritic growth generally couple diffusion effects in the melt with the physics introduced by the interface. Unfortunately, in terrestrial based experiments, convective effects in the melt alter the growth process in such a manner as to prevent definitive analysis of convective, diffusive or interfacial effects. Thus, the effective elimination of convection in the melt by operating experiments on orbit were required to produce high-fidelity data needed for achieving further progress. This simple fact comprised the scientific justification for the IDGE.
Document ID
20010057249
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Glicksman, M. E.
(Rensselaer Polytechnic Inst. Troy, NY United States)
Koss, M. B.
(Rensselaer Polytechnic Inst. Troy, NY United States)
LaCombe, J. C.
(Rensselaer Polytechnic Inst. Troy, NY United States)
Lupulescu, A. O.
(Rensselaer Polytechnic Inst. Troy, NY United States)
Frei, J. E.
(Rensselaer Polytechnic Inst. Troy, NY United States)
Guimarra, C.
(Rensselaer Polytechnic Inst. Troy, NY United States)
Malarik, D. C.
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
August 20, 2013
Publication Date
March 1, 2001
Publication Information
Publication: Microgravity Materials Science Conference 2000
Volume: 1
Subject Category
Chemistry And Materials (General)
Funding Number(s)
CONTRACT_GRANT: NAS3-25368
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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