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RESEARCH AND DEVELOPMENT ON HIGH-PRESSURE-HIGH-TEMPERATURE METALLURGY.
MANLABS INC CAMBRIDGE MASS
The phase diagram of the iron-silicon system was investigated at high pressure using alloys of varying silicon content up to 13.9ao Si. The results of the investigati the Mo-C system were used to understand the relative stability of the monocarbides of molybdenum and to predict the high-temperature, high-pressure characteris tics of a cubic phase in the W-C system. In the attempted preparanoon of the intermetallic com pound, boron antimonide, techniques were devel oped to predict the crystal structure and the lattice constants of the anticipated compound. The predicted energy gap for BSb, zinc blends, is 2.5 e.v. The problem of microcracking in small specimens of low alloy steels austenitized and quenched at high pressure has been sodeed. The use of a liquid pressure transmitting medium has proved mandatory for the successful high pressure treatment of these specimens. Author
Summary rept., Mar-Dec 62,
Rept. on Metallic Materials.
AF33 657 8764