In Situ SEM Microtensile Testing of Oxidized Grain Boundaries in Alloy 600

摘要

Microtensile testing was performed on solutionannealed and solution annealed + thermally treatedconditions of Alloy 600 in order to measure the oxidizedand non-oxidized grain boundary strength after exposureto simulated PWR primary water conditions. Methods forin situ SEM microtensile testing of single grainboundaries were successfully developed. Experimentalobservations were made on the general effects ofintergranular oxidation on mechanical behavior.