オーステナイト鋼に析出した六方晶炭化物V₂Cについで

抄録

Hexagonal carbide V₂C has never been found in steel.
The present authors, however, found that this carbide was precipitated in 16% chromium-12% nickel-0.12% carbon austenitic steels containing vanadium by the electron microscopic and electron diffraction methods.
The carbide V₂C had lattice constants of a=2.8 Å and c=4.5 Å, and axial ratio c/a of about 1.6, and dispersed as small grain-like particles, near by carbide M₂₃C₆ which precipitated in grain boundary.
The precipitation of the V₂C carbide was found to occur only in the steels with a comparatively low value of V/-(C+ N) atomic ratio, and the carbide seemed to be a transitional phase since it disappeared after a prolonged heating.