Effect of elongated nonmetallic platelet inclusions on the ductile-failure resistance of structural steel

1990 
The geometric characteristics of elongated platelet sulfide nonmetallic inclusions are determined for hot-rolled strip steel ON6 with various sulfur contents, and their effect on the reduction in ductility and plasticity in the direction across the roll is investigated. A distinct relation is observed between the resilience (plasticity) and the number of pore traces in the fracture, which are initiated by elongated platelet inclusions. An attempt is made to derive an analytic expression for the influence exerted by elongated platelet oriented inclusions on the limiting plasticity based on the Braun-Embury model.
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