Modelling Cleavage Fracture in High Strength Steels and Their Welds


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High strength steels are characterized by their high yield strength, but to guarantee a safe design, a sufficiently large fracture toughness value is also required. In this paper, the fracture toughness of three high strength steels (sy= 460-890 MPa) and their welds has been studied at low temperatures. Experimental results have been used to validate a statistical “weakest link” fracture model. The model takes into account the possibility of fracture nucleation in different types of particles and brittle phases, as well as the crack-arrest factors at the different microstructural barriers (particle-matrix interface and grain boundaries).



Edited by:

Jaroslav Pokluda




R.-M. Rodriguez et al., "Modelling Cleavage Fracture in High Strength Steels and Their Welds", Materials Science Forum, Vol. 482, pp. 171-174, 2005

Online since:

April 2005




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