... Abstract Four-point bending tests without internal pressure were performed for Type 304 stainless steel pipes with circumferential flaws at room temperature. The specimens are 1-inch diameter (33.7 mm) Schedule 160 pipes (6.3 mm wall thickness). The flaws were part-through flaws located...

... Abstract The 1963 ASME Section III design fatigue curve was generically applicable to a range of stainless steels in low cycle fatigue. In high cycle fatigue the behavior is sensitive to factors such as material strength, which raises questions about the applicability of the post-2009 ASME III...

... Abstract Fatigue Crack Growth Rates (FCGRs) of austenitic stainless steels can be significantly enhanced when tested in a high temperature water environment compared to those tested in air. Existing FCGR models are based on simple isothermal waveform loading. Recent work has highlighted...

... maximises the achievement of its objectives. environmentally assisted fatigue pressurized water reactor stainless steel Proceedings of the ASME 2022 Pressure Vessels & Piping Conference PVP2022 July 17-22, 2022, Las Vegas, Nevada, USA PVP2022-84625 INCEFA-SCALE (INCREASING SAFETY IN NPPS...

.... The NUREG/CR-6909, Rev. 1 contains notable amounts of valuable information, but instructions for application can be ambiguous or conflicting. An example related to the modified strain rate approach for determining F en factors is provided. fatigue environment stainless steel Proceedings...

... environment stainless steel Proceedings of the ASME 2022 Pressure Vessels & Piping Conference PVP2022 July 17-22, 2022, Las Vegas, Nevada, USA PVP2022-84719 ENVIRONMENT ASSISTED FATIGUE EXPERIMENTAL CHALLENGES AND SOLUTIONS Jussi Solin1, Tommi Seppänen VTT Technical Research Centre of Finland Ltd Espoo...

... Abstract Savannah River National Laboratory (SRNL) has characterized powder bed fusion processed Type 304L stainless steel for use as hydrogen storage and process vessels. As part of this characterization, a simple cylinder (C-cylinder) and a “D-cylinder” were fabricated using two different...

... Abstract A pressurized water reactor primary environment can have a deleterious effect on the fatigue lifetime of austenitic stainless steels. There is a need to develop a greater understanding behind the effect of a pressurized water reactor primary environment on the fatigue behaviour...

... Abstract In cryogenic process plants that use aluminum alloy brazed core exchangers, a transition to austenitic stainless steel piping is often required. Presently, multi-layered explosion bonded piping joints provide that joint. These joints employ multiple layers of different alloys (e.g...

... and/or the F en methodology is considered to provide additional relief to these cases so that the cumulative usage factor calculation can still be kept below unity. fatigue stainless steel LCF EAF Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual...

... selected examples. codes and standards fatigue stainless steel EAF Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual, Online PVP2021-62187 DESIGN BY ANALYSIS, CODES, STANDARDS AND RULES ON EAF - APPLICABILITY TO STAINLESS STEELS IN PWR PRIMARY...

... in agreeing data gaps, mechanistic understanding needs, and testing requirements. environmentally assisted fatigue pressurized water reactor stainless steel Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual, Online PVP2021-61793 INCEFA-SCALE...

... Abstract The effect of a single overload on the fatigue crack growth rate was investigated for Type 316 stainless steel. Fatigue crack growth tests were conducted by controlling strain and load. Tensile and compressive overloads were applied during constant amplitude cycling. The overload ratio...

...-Threshold . This paper presents further evidence in support of the approach by extending the database of test results to 316-type steels and extending the range of environmental and loading conditions. The additional stainless steel data demonstrates that the size of the margin is insensitive to strain...

... ferritic and austenitic steels though their elastic plastic cyclic responses are much different. Fatigue data for stainless steels extended to ¼ million cycles and the design curve was extrapolated to one million cycles. Later on — supported by load-controlled HCF tests — the original LCF approach has been...

... and design criteria applied in Finnish NPP’s are explained. codes and standards fatigue stainless steel EAF CODES, STANDARDS, RULES AND ASSUMPTIONS ON ENVIRONMENT ASSISTED FATIGUE FOR FATIGUE MANAGEMENT OF PRIMARY PIPING Jussi Solin1, Tommi Seppänen VTT Technical Research Centre of Finland Ltd...

..., the reference curve in air to which fatigue life in water is compared shall be as reliable as possible. Literature studies and accumulated data at VTT reveal that the use of common reference curves for a wide range of austenitic stainless steel alloys and temperatures is unreliable. Some design codes already...

... Abstract Microstructure development is examined for a specialized spot weld that is used as a solid-state closure process for stainless steel tubing, referred to as pinch welding. In order to elucidate the microstructural evolution of the weld, a series of test welds were made at nominal...

... and the peculiar material behaviour of austenitic stainless steel have been widely used. This complicates quantification of the effect of water environment, commonly referred to as the F en factor. Four test series in simulated PWR coolant were completed over four years with stainless steel alloys 347 and 304L...

... assessment method for the pipe with the crack under mixed-mode. In this study, the XFEM (extended Finite Element Method) [3][4] was applied to assess failure of the austenitic stainless steel pipe (Type 304) with a circumferential crack subjected to bending and torsional moment. XFEM does not require...