J. Vojvodicgvardjancic et al., FRACTURE-TOUGHNESS OF FINE-GRAINED MICRO-ALLOYED STEELS AT NIL DUCTILITY TEMPERATURE AND TRANSITION RANGE, Journal de physique. IV, 3(C7), 1993, pp. 105-108
The conventional test methods combined with non-standard measuring of
fracture toughness K-ic for the determination of low- temperature limi
t of exploitation was applied on nine different structural steels eith
er fine-grained micro- alloyed steels or low-alloyed structural steels
. These experiments confirmed that the results of low-temperature test
s could be successfully used for the calculation of some fracture mech
anics characteristics of the investigated steels as for instance the d
ynamics yield strenght sigma(yd), the dynamics fracture toughness K-id
and, of course, the static fracture toughness K-ic.