Abstract
The microstructures of TiC0.5N0.5-19%Mo2C-23%Ni alloy sintered at 1723 K in vacuum or in various nitrogen pressures (PN2) were mainly studied.
It was found that Mo2C phase crystallized during cooling after sintering, when the alloy was sintered in the atmosphere with low PN2 (≤3 kPa), and the amount of the phase increased with lowering PNN2⋅The phase did not crystallize when the carbon content of the alloy was slightly increased. The reason why the phase was produced or not according to PN2and carbon content of the alloy was discussed. The transverse-rupture strength of the alloy was examined in relation to these two factors affecting the microstructures.
