Avoidance of brittle fracture of cold-formed hollow sections by appropriate choice of steel material

Evolution of Impact Properties of 16MND5 Forgings for Nuclear Reactor Pressure Vessel during Thermal Aging at 500°C

“…The Charpy impact energy-temperature can be drawn by fitting the hyperbolic tangent function in ref. [13] as: (1) where E is the impact energy; T is the temperature of Charpy impact test; Tm is the ductile to brittle transition temperature, whose value were shown in Fig. 5; A is the impact energy at the temperature Tm; B is half of the difference between the energy at lower shelf and upper shelf; C is the temperature width of the ductile to brittle transition region.…”