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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Atom Probe Tomography for Advanced Characterization of Metals, Minerals and Materials III
Presentation Title Characterization of Mechanical Properties of the A356 Cast Aluminum Alloy in Accordance with the Cluster Formation Behaviors at Different Aging Temperatures
Author(s) Won Sang Shin, Kyo Jin Hwang, Dong-Hyuk Jung, Yoon-Jun Kim
On-Site Speaker (Planned) Won Sang Shin
Abstract Scope An A356 cast aluminum alloy (Al–7wt.%Si–0.3wt.%Mg), contains approximately 50% eutectic microstructure. Such a high content of Si plays a significant role in strengthening of the alloy by controlling eutectic morphology, precipitation of various intermetallic compounds, and formation of Al-Si-Mg based clusters in α-matrix. We present the formation behaviors of Al-Si-Mg-Mn nanoclusters in the alloy using an Atom Probe Tomography (APT). Samples were differently aged at the temperatures of 110℃, 130℃, and 150℃. As a result of the cluster analysis, the characteristics of clusters according to the temperature such as the mean radius, <R>, the number density of clusters per volume, NV, were obtained. The A356 alloy exhibited 4 types of clusters formed in α-matrix depending on their atomic concentration ratios among Al, Mg, and Mn. The results from tensile tests for those samples indicate tensile strength and elongation are strongly dependent of the cluster types, <R>, and NV.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Review of Atom Probe Tomography Technology: The Present and Future
APT-based Stoichiometry Measurements of Single Crystal ThO2
APT for Atomic-scale Insights to the Origins of Materials Properties
Atom Probe Characterisation of Hydrogen in Iron and Steels
Atom Probe Tomography of Refractory High Entropy Alloys
Atom Probe Tomography Study of Fission Products in Neutron Irradiated U-Mo Fuel
Characterization of Mechanical Properties of the A356 Cast Aluminum Alloy in Accordance with the Cluster Formation Behaviors at Different Aging Temperatures
Compositional Dependencies of Ni- and Fe-oxides to Experimental Parameters in Atom Probe Tomography
Coupled APT and TEM Investigation of Cu Assisted Nucleation of L12 Precipitates in FCC-based High Entropy Alloys (Invited)
Elemental Re-distribution Inside Shear Bands Revealed by Correlative Atom-probe Tomography and Electron Microscopy in a Deformed Metallic Glass
Elucidating Solute Clustering and Precipitation of Al-Cu-Mg-Ag-Si Model Alloys
Evolution of Multi-phase Microstructure and Mechanical Properties of 12Cr-10Ni-Mo-Ti Maraging Stainless Steel
Material Alterations in Intense Mechanical and Chemical Contacts
Morphological Classification of Dense Objects in Atom Probe Tomography Data
Nanoparticle Sample Preparation for Atom Probe Tomography: Chemical Fixation and Cryo-Fixation
Post-morten Selected Area Analysis for Optimized Statistical Analysis of APT Data
Quantifying Compositional Uncertainty Arising from Peak Overlaps
Understanding Early Stages of Nanoscale Hydriding and Oxidation Mechanisms in Metallic Systems via Atom Probe Tomography and Multimodal Chemical Imaging

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