INTRODUCTION K

摘要

There are three papers on this topic organized into a single technical session. The first paper by P. Le Delliou et al. presents recent improvements in toughness prediction of cast duplex stainless steel components. The paper will present the experimental data used to develop the formulae, the formulae themselves and some examples of validation. The second paper by M. Uddin et al. describes the flaw evaluation procedure for cast austenitic stainless steel materials using a newly developed statistical thermal aging model. In this paper, new statistical model developed to predict toughness of fully aged CASS materials. The new statistical model was developed based on the experimental toughness and chemical compositions of CF8m CASS materials. The last paper by K. Hojo introduces the revision points of CASS pipe flaw evaluation of JSME rules on FFS. The revision includes the thermal aging degradation models for stress-strain curve and fracture resistance (J-R) curve, application of screening criteria for a fracture evaluation procedure to cast stainless steel pipes, and introduction of a new critical stress of limit load evaluation method for a shallow flaw with less than or equal to 0.5 of the flaw depth to thickness.