Molecular Dynamics Simulation of Creep Resistance Mechanism of Laves Phases in Heat Resistant Steels
Heat resistant steels strengthened by dispersed Laves phases can provide excellent creep resistance under high temperature service by combining solid solution strengthening phases with precipitation strengthening of diffusely distributed Laves phases.However,these mechanisms of the relationship among particles of diffusely distributed Laves phases and matrix phases,dislocations and twin movement are not completely clear.By establishing the model for heat resistant steels containing Laves phases with different diameters and different distributions of diameters,and then applying uniaxial loading to this model,the effect of Laves phases with different size distributions on the mechanical properties of heat resistant steels was systematically studied.After study,it was concluded that the smaller the diameters of Laves phases were,the better the mechanical properties were,which provided theoretical guidance for the actual preparation of heat resistant steels with high creep resistance.
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维普
