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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Hume-Rothery Award Symposium: Alloy Phase Chemistry at the Atomic Level - Opportunities and Challenges
Presentation Title Solute Distribution Analysis of Early Stages of Aging in Al-Mg-Si Alloys via Atom Probe Tomography
Author(s) Phillip Dumitraschkewitz, Gunther Rank, Stephanie Sackl, Stephan S.A. Gerstl, Stefan Pogatscher
On-Site Speaker (Planned) Phillip Dumitraschkewitz
Abstract Scope 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.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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Atomic Scale Modeling of Phase Separation in Fe-Cr Alloys
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Design and Development of Novel High-temperature Creep Resistant 9% Cr Steels
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Diffusivity Determination of Slow Diffusion Systems using Diffusion Couples and Multiples
First-principles Modeling of Anomalous Precipitation in W-Re Alloys under Neutron Irradiation
Grain Boundaries in Molybdenum. The Role of Segregation for an Improved Ductility
Interaction of Solutes with Interfaces in Iron
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Local Order and Lattice Dynamics in a Shape Memory Strain Glass Alloy
Method for Correcting Atom Probe Tomography Trajectory Aberration Artifacts in Multiphase Materials
Microstructural Characterization of Mn-Ni-Si Precipitates in Reactor Pressure Vessel Steels from the High Fluence Intermediate Flux UCSB ATR-2 Irradiation
Nanoalloys & Nanoparticles for Catalysis: Insights from Atom Probe Tomography & Complementary Techniques
On the Amazing Role of Atom Probe Tomography in Nuclear Materials Research: Some Seminal Contributions and Opportunities for Developing a New Lab On a Chip Paradigm
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Phase Decomposition in Fe-Cr Alloys under Irradiation
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Solute Distribution Analysis of Early Stages of Aging in Al-Mg-Si Alloys via Atom Probe Tomography
Solute Segregation to Migrating Ferrite/Austenite Interfaces
Spinodal Decomposition in FeCr Alloys: From Fundamental to Applications
The Role of Atom Probe Tomography in Decoding the Materials Genome
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