抄録
This paper deals with the evaluation of crack growth behavior by stress corrosion cracking (SCC) based on non-linear fracture mechanics taking account of plastic deformation. Compact tension test is carried out to evaluate the crack growth behavior by SCC under small-scale and large-scale yielding condition. Four-point bending tests are also carried out to evaluate the crack growth behavior by SCC in plastic deformation field. The crack growth rate is almost same at the same level of the equivalent stress intensity factor defined by J integral, irrespective of yielding condition. The equivalent stress intensity factor is an appropriate parameter for evaluation of crack growth by SCC in plastic deformation field.
