In zero gravity, alined columnar microstructures form at expense of equiaxed growth. Preferential crystal growth occurs in solidification chamber consisting of semicylindrical copper chill block brazed to stainless steel top plate. Method is best utilized in castings where directional dependence of physical properties is beneficial, as in turbine blades.
Reduced gravity favors columnar crystal growth
NASA Tech Briefs ; 5 , 3
1981-01-01
Miscellaneous
No indication
English
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Engineering Index Backfile | 1918
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