WITHDRAWN: A MVSA approach to mine information from APT data

Multivariate statistical analysis (MVSA) methods, such as used in analytical electron microscopy and surface science, were applied to atom probe tomography (APT) data. It was found that MVSA methods allow fast and intuitive interpretation of APT data, where both spatial and spectral variance are described simultaneously in an unbiased manner. In this work, a FeCr-Al-Ti alloy (PM2000) subjected to different heat treatments was examined via APT. The different scale three-phase microstructures resulting from these heat treatments provided an interesting test of the capabilities and limits of the present MVSA methodology. Principal component analysis (PCA)-based MVSA identified the precipitate populations in all three samples, including ultrafine precipitates with the use of small (0.5 nm) voxel size, and high resolution (0.02 u) mass binning.