|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Mechanical Behavior and Degradation of Advanced Nuclear Fuel and Structural Materials
||Effect of Residual Strain on Short Time Oxidation Behavior of Machined 304 Stainless Steel in High Temperature, High Pressure Deaerated Water
||Rachel E. Turfitt, Bryan Webler
|On-Site Speaker (Planned)
||Rachel E. Turfitt
The effect of residual strain was studied on machined 304 stainless steel for short times in high temperature, high pressure deaerated water. A hot loop/cold loop testing apparatus allowed precise short time hot water exposures. Specimens were exposed for 10, 50 or 100 hours after straining up to 60% engineering strain. Energy dispersive x-ray spectroscopy in a transmission electron microscope indicated a chromium rich spinel inner oxide, with metallic particles rich in iron and nickel embedded within. Single crystal nickel rich particles formed a discrete outer layer, with no evidence of an outer oxide. Parabolic oxide growth rates were observed at rates higher than reported in literature. No effect of residual strain was observed; potential residual strain effects were outweighed by the effects of machining. Machining also affected the composition of the layers formed from that reported in literature. Additional analysis of polished specimens with residual strain is underway.