|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Hume-Rothery Award Symposium: Alloy Phase Chemistry at the Atomic Level - Opportunities and Challenges
||Solute Distribution Analysis of Early Stages of Aging in Al-Mg-Si Alloys via Atom Probe Tomography
||Phillip Dumitraschkewitz, Gunther Rank, Stephanie Sackl, Stephan S.A. Gerstl, Stefan Pogatscher
|On-Site Speaker (Planned)
Early stages of aging in Al-Mg-Si alloys are experimentally extremely difficult to observe. In this work a new strategy for the measurement of the as-quenched condition and various initial stages of aging via atom probe tomography (APT) has been applied. To hinder uncontrolled aging at room temperature after quenching, sample preparation and sample transfer into the atom probe analysis chamber was done under cryogenic conditions. However, the quantification of early stage clusters is still difficult due to the spatial noise of the APT data. Additionally surface migration of Si during the experiment is known to generate artifacts in the vicinity of poles. The data is corrected for artifacts and the early stages of aging of Al-Mg-Si alloys are discussed within the framework of a customized APT data analysis.
||Planned: Supplemental Proceedings volume