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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
Sponsorship TMS Functional Materials Division
TMS Structural Materials Division
TMS: Alloy Phases Committee
TMS: Nuclear Materials Committee
TMS: Phase Transformations Committee
Organizer(s) Wei Xiong, University of Pittsburgh
Shuanglin Chen, CompuTherm LLC
Frederic Danoix, Université de Rouen
Indrajit Charit, University of Idaho
Scope A new generation of experimental and modeling techniques now permits exploration of local phase chemistry at the atomic level. The implications of this work are wide-ranging, both for improving the understanding of existing materials, and for the development of new and improved materials for structural and functional use. Applications include improvements in the understanding of strengthening mechanisms in engineering materials; characterization of the role of alloy elements and trace additions on phase transformation behavior; assessment of safe operating lifetimes of materials under thermal ageing and irradiation conditions; and the design and development of new materials for maximum performance in terms of mechanical, electrical, optical or magnetic properties.

Success in these areas is critically dependent on the accuracy and reliability of the experimental techniques being used, and on the quantitative validation of the theoretical models employed. Considerable issues arise at this point. Experimental methods are being pushed to their limits, and benchmarking standards are difficult or impossible to obtain. Theoretical models require simplifying assumptions, which may distort outcomes or reduce the level of confidence in the numerical results obtained.

The focus of this symposium is to assess the state of art in atomic-scale characterization and modeling of alloy phase chemistry, and to identify the key steps needed in order to make further progress. What works? What does not work? How can we do better? In the absence of reliable quantitative standards for individual techniques, cross-correlation is required between different experimental methods, between different modeling approaches, and especially between experimental and modeling studies of the same system(s).

Papers are invited which contribute to the above themes. Critical appraisals of the strengths and weaknesses of individual techniques (atom probe tomography, X-ray microanalysis, electron energy loss spectroscopy etc.) for specific applications are sought. Case studies involving the use of a range of experimental techniques to study a single materials problem are particularly welcome. Special prominence will be given to studies which involve both advanced experimental work and state-of-the-art modeling approaches.
Abstracts Due 07/17/2016
Proceedings Plan Planned: Supplemental Proceedings volume
PRESENTATIONS APPROVED FOR THIS SYMPOSIUM INCLUDE

A New Look at Steel Martensite Tempering with Advanced Characterization Tools
Advanced FIM and APT Techniques at the University of Oxford
Advanced Microstructural and Chemical Characterization of Nano-scale NiMnSi Precipitates Formed in Irradiated Reactor Pressure Vessel Steels Using Atom Probe Tomography and Scanning Transmission Electron Microscopy
Arranging Atoms for Fun and Profit: A Tale of Two Smiths
Atomic-scale Analytical Tomography
Atomic Scale Modeling of Phase Separation in Fe-Cr Alloys
Atomistic Modelling of Carbon Redistribution in Martensite Phase
Combining Small Angle Scattering, Atom Probe Tomography and Differential Calorimetry for a Better Characterization of Solid Solution Decomposition
Design and Development of Novel High-temperature Creep Resistant 9% Cr Steels
Design of Nd-Fe-B Permanent Magnets with Maximum Coercivity by Controlling Grain Boundary Chemistry at the Atomic Level
Determination of Interfacial Free Energies in Two-phase Metallic Alloys: Atom-probe Tomographic Experiments and First-principles Calculations
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
Kinetic Pathways in Phase Separation Processes: Atom-Probe Tomography versus Modeling
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
Outlooks for Atom Probe Microscopy
Phase Decomposition in Fe-Cr Alloys under Irradiation
Precipitation Kinetics: Quantitative In-situ Characterization Using Small-angle Scattering Helps Establish Models Validity
Prediction of Segregation Induced Precipitation at Dislocations via Atomistic Simulations
Quantification of Hydrogen using Atom Probe Tomography
Revisiting Field Ion Microscopy
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
Thermally Induced Phase Transformations in Beta-titanium Alloys and Corresponding Effects on Mechanical Properties
Unique Insights from the Correlated Combination of Atom Probe and Electron Tomography


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