Influence of SiC grain boundary character on fission product transport in irradiated TRISO fuel

Identification of Silver and Palladium in Irradiated TRISO Coated Particles of the AGR-1 Experiment

Evidence of the release of certain metallic fission products through intact tristructural isotropic (TRISO) particles has been seen for decades around the world, as well as in the recent AGR-1 experiment at the Idaho National Laboratory (INL). However, understanding the basic mechanism of transport is still lacking. This understanding is important because the TRISO coating is part of the high t...

Influence of Grain Boundary Character on Creep Void Formation in Alloy 617

Variance of the Grain Boundary Character Distribution

A method for estimating the variance of the grain boundary character distribution from experimental recovery of the two-point correlation functions is derived. The method is illustrated in 2-D to analyze the variance of “susceptible” boundaries in alloy 304 stainless steel. Comparison of these estimates with results obtained directly from OIM measurements is presented. Introduction When the phe...

Effect of grain boundary character on segregation-induced structural transitions

Segregation-induced structural transitions in metallic grain boundaries are studied with hybrid atomistic Monte Carlo/molecular dynamics simulations using Cu-Zr as a model system, with a specific emphasis on understanding the effect of grain boundary character. With increasing global composition, the six grain boundary types chosen for this paper first form ordered complexions, with the local s...

Influence of Y and La Additions on Grain Growth and the Grain-Boundary Character Distribution of Alumina

Grain-boundary character distributions (GBCDs) were determined for spark plasma sintered Yand La-doped aluminas prepared at temperatures between 1450°C and 1600°C. La doping leads to grain boundaries that adopt (0001) orientations 3.7 times more frequently than expected in a random distribution, whereas the Y-doped microstructures are more equiaxed. At 1500°C, some of the boundaries in the Y-do...