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- W20975937 abstract "Using a special arc-melting technique, sound, homogeneous 100-g cylindrical castings of UC of near stoichi ometric composition were consistently produced. In the casting process developed, UC buttons previously prepared by arc melting the elements were placed over the opening of a graphite mold in a helium-atmosphere arc furnace. When the UC button became fully molten under the arc, it dropped by gravity into the mold. The densities of the resultant castings were about 95% of theoretical. The castings could be successfully machine ground using a water-base cutting fluid. In a preliminary determination of some physical properties of cast UC, the thermal conductivity measured at 100, 400, and 700 deg C was 0.060, 0.053, and 0.060 cal/(sec)(cm)(C), respectively. The mean linear- thermal-expansion coefficient in the temperature range from 20 to 95o deg C was 11.4 x 10/sup -6/ per C. Cast UC encapsuled in stainless steel exhibited good resistance to thermal stress and shock in two series of tests of 100 thermal cycles to 90WC and 100 cycles to 1100 deg C. Heat treating a casting specimen for 1 hr at 1000 deg C produced no significant change in microstructure, but after a subsequent exposure of 1 hr at 1500 deg C hardening and the appearance of the U/sub 2/C/sub 3/ phase were evident. In tests of compressive strength on a single specimen rupture occurred at 54,500 psi. (auth)" @default.
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- W20975937 date "1959-01-01" @default.
- W20975937 modified "2023-09-27" @default.
- W20975937 title "PREPARATION AND PROPERTIES OF URANIUM MONOCARBIDE CASTINGS" @default.
- W20975937 doi "https://doi.org/10.2172/4279680" @default.
- W20975937 hasPublicationYear "1959" @default.
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