Containerless processing of nickel aluminides and their resulting mechanical properties

Details Containerless processing of nickel aluminides and their resulting mechanical properties Containerless processing of nickel aluminides and their resulting mechanical properties

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aipc..197..312c&link_type=abstract

Drops and bubbles: third international colloquium. AIP Conference Proceedings, Volume 197, pp. 312-318 (1990).

Physics

Scientific paper

By utilizing electromagnetic levitation, it is possible to control both the degree of superheating and, more importantly, the degree of supercooling of a melt prior to splat-quenching. This allows some control over the resulting microstructure. For the case of Ni3Al-Cr alloys, this enabled us to control the antiphase domain size relative to the grain size. Subsequent annealing treatment were used to modify these microstructural features. Miniature tensile tests were performed on the resulting material in order to test current theories of ductility in these ordered alloys. Conducive to the testing of such theories is the ability to solidify the various alloys at different degrees of undercooling, which is conveniently done with containerless processing.

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