Micromechanics of fracture in a NiCrMo alloy

摘要: Abstract In a NiCrMo steel, quenched and tempered at various temperatures, the critical stress strain fracture have been computed in SEN bending toughness specimens effect of triaxiality factor on ductility has studied. The experimental investigation included tensile ( K Ic , COD J ) tests, quantitative microscopy for statistical size distribution analysis inclusions, fractography. An attempt made to identify effective inclusion characterize microfracture process under uniaxial triaxial loading situations mechanics void expansion investigated. A relationship between zone material microstructure as well fractographic features presented cleavage microvoid coalescence mode fracture.