Publications

Results 201–225 of 371

Search results

Jump to search filters

Application of FIB/SEM/EDXS tomographic spectral imaging and multivariate statistical analysis to the analysis of localized corrosion

2012 IEEE Statistical Signal Processing Workshop, SSP 2012

Kotula, Paul G.; Van Benthem, Mark H.; Sorensen, Neil R.

Tomographic spectral imaging is a powerful technique for the 3D analysis of materials. The present work describes the application of this technique to the analysis of localized corrosion of a connector pin. Implemented via serial sectioning in a focused ion-beam/scanning electron microscope, electron-excited x-ray spectra were acquired from each voxel in a 3D array. The resultant tomographic spectral image was analyzed in its entirety with Sandia's Automated eXpert Spectral Image Analysis multivariate statistical analysis software. The result of the analysis is a small number of chemical components which describe the 3D phase distribution in the volume of material sampled. © 2012 IEEE.

More Details

Nanoindentation and TEM Characterization of Ion Irridiated 316L Stainless Steels

Energy Technology 2012: Carbon Dioxide Management and Other Technologies

Hattar, Khalid M.; Buchheit, Thomas E.; Kotula, Paul G.; Mcginnis, Alexander; Brewer, Luke

Understanding the effects of extensive radiation damage in structural metals provides necessary insight for predicting the performance of those metals considered for application in the extreme radiation environment. Predicting mechanical performance after long term radiation exposure is of great importance to extending the life of current nuclear reactors and for developing future materials for the next generation of reactors. A combination of finite element modeling, nanoindentation, and TEM characterization were used to rapidly determine the microstructure and mechanical properties influences of ion irradiation on a standard 316L stainless steel sample. The results of this study found that ion irradiation and small scale mechanical property testing can be used to characterize extensive levels of radiation damage structure, only when significant consideration is given to ion irradiation depth, surface roughness and polishing condition, the irradiation temperature, and.many other experimental parameters. © 2012 The Minerals, Metals, & Materials Society. All rights reserved.

More Details
Results 201–225 of 371
Results 201–225 of 371
Top