vtxY)^-:v^i^-.:. 



Carbon, I'lO per cent. Vanadium, 13 '45 per cent. 



Transformation stages of Vanadium Cementite and Vanadi- 

 ferous Ferrite into Vanadium Hardenite. Upper area, mainly 

 Vanadiferous Ferrite with Vanadium Cementite nodules, together 

 with a little Sorbitic Vanadium Pearlite. Middle area, ground 

 mass of unsaturated Vanadium Pearlite, overlaid with undissolved 

 nodules of Vanadium Cementite. Lower area, mainly structure- 

 less Vanadium Hardenite cells formed from a series of centres 

 and surrounded by walls of the structure described for middle 

 area. Hardening temperature, near 1400" C. 



Fig. 9. 



(Majiiiiticil 4r>0 (liinnettu-s.) 



