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SOME CASTING PROPERTIES OF HIGH-ALLOY NICKEL ALLOY EI765 (Kh70VMYuT),
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
The fluidity changes with increasing temp. just as in 30L alloys. The pouring temp. of component pieces is 1460-80 degrees. The addn. of 0.1-0.2 percent Ca or 0.05 percent Ce and 0.10 percent Ba to the ladle decreases the fluidity considerably. The addn. of 0.3 percent Ca and Ce or 0.2 percent Ba increases the fluidity again. The addn. of 0.3-0.7 percent Nb has no effect on the fluidity of the alloy. Free linear shrinking is 2.6 percent. Heating the alloy to 1530 degrees increases the thermal stability twice as much as that of the 30L alloy. Further heating, however, decreases the thermal stability. Thermal processing is practically ineffective on the microstructure of the poured metal. The addn. of Ca, Ce, and Ba has no effect on the microstructure either. Author
APPROVED FOR PUBLIC RELEASE