Abstract
1. Up to 0.08% N is assimilated in high-speed steels from ferrochromium added during open melting. This amount of nitrogen is retained in the process of plastic deformation and annealing. 2. The nitrogen in high-speed steel forms vanadium and tungsten (molybdenum) carbonitrides, isomorphous with vanadium carbides MC and binary tungsten (molybdenum) carbides M6C. The nitrogen tends to form vanadium carbonitrides rather than tungsten or molybdenum carbonitrides. 3. With increasing amounts of vanadium carbide the effects of nitrogen and carbon are identical with equiatomic substitution.
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