Abstract
The two-phase region of vacuum-sintered TiC-Mo2C-Ni alloys with nitrogen was mainly studied in relation to the carbon content. The mechanical properties of the alloys were also studied at low temperatures. The nitrogen was introduced into specimens by use of TiCxNy (Ti-C-N solid solution) powder.
It was found that the width of two-phase region became wider with increasing nitrogen content of the alloy. The phenomenon was closely related to the denitrification of the alloy, where the difference in the amounts of denitrification between high and low carbon alloys enlarged as the nitrogen content increased. It was also found that the nitrogen contained alloys showed excellent mechanical properties with lower nitrogen and higher carbon.
