Small Punch Fracture Testing Applied to the NESC-I Spinning Cylinder Material

Small punch fracture testing with subsequent SEM fractographic analysis was applied to an A 508 Class 3 reactor pressure vessel steel used originally in the NESC-I spinning cylinder experiment, in order to determine the small punch ductile-brittle transition temperature TSP and the fracture appearance transition temperature of both the base material and the sub-clad heat affected zone. The results were then compared with NESC-I data obtained using conventional testing methods, in particular Charpy impact testing. For the base material, the SP transition temperatures were determined as TSP = -137 °C and TSP, FATT = -130 °C. The small punch transition temperature of the HAZ was estimated to lie in the vicinity of -160 °C. These results led to a consistent value of the correlation factor = 0.39, providing a relation of TSP to the transition temperature values determined from conventional testing techniques.

TURBA Krystof;  HURST Roger Christopher;  HAEHNER Peter; 

2013-02-28

OCELOT s.r.o.

JRC72983

978-80-260-0079-2,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC72983,