Comment on "Effect of carbide distribution on the fracture toughness in the transition temperature region of an SA 508 steel"

Benoit Tanguy (1) , Jacques Besson (1) , André Pineau (1)

1 CDM - Centre des Matériaux

Critical cleavage stress values and carbide sizes obtained in a recent work by Lee et al. [Acta Mater. 50 (2002) 4755] are recalculated using 2D and 3D finite element simulations and new constitutive law, instead of small scale yielding assumption and likely improper choice for the behavior of SA 508 steel. A new model based on the weakest link concept with the determined carbide size distribution (CSD) is succesfully applied to predict KJc measurements obtained on SA 508 steel and on a similar material (22NiMoCr3-7).

Mots clés: Toughness; Statistical model; Finite elements analysis

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Benoit Tanguy, Jacques Besson, André Pineau. Comment on "Effect of carbide distribution on the fracture toughness in the transition temperature region of an SA 508 steel". Scripta Metallurgica, 2003, 49, pp.191-197. ⟨10.1016/S1359-6462(03)00239-2⟩. ⟨hal-00142081⟩