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Theoretical aspects of undercooling, nucleation and growth of metals in space (1977)

Miller, R. I. ; Johnston, M. H.

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Publication Date: 2019-07-13

Description: A mathematical model which can predict solid material properties from known melt properties and solidification environment is being developed to aid in selecting materials systems which could benefit scientifically or commercially from experimentation in space. In its present, preliminary form, the model calculates grain size and dendrite morphology from the undercooling parameter and the parameter which characterizes heterogeneous nucleation. Calculations with the present model are compared to experimental data, and needed improvements in the model are described. Some theoretical problems relating to undercooling and environmentally-induced solute segregation are also discussed.

Keywords: ASTRONAUTICS (GENERAL)

Type: AIAA PAPER 77-164 , Aerospace Sciences Meeting; Jan 24, 1977 - Jan 26, 1977; Los Angeles, CA

Format: text

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