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Fracture toughness (KIc), Vickers hardness, and constitutive equation under tensile loading for high strength rail steel were determined at −40, −10 and 23°C. KIc and hardness were directly determined from experimental testing, while the constitutive equation also relying on finite element (FE) modelling because of the non-uniform deformation during the necking process. The constitutive equation was...
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