Materials by Design: An MPMD Symposium Honoring Greg Olson on the Occasion of His 70th Birthday: Materials Design II
Sponsored by: TMS Materials Processing and Manufacturing Division, TMS Functional Materials Division, TMS Structural Materials Division, TMS: Integrated Computational Materials Engineering Committee, TMS: Phase Transformations Committee
Program Organizers: Carelyn Campbell, National Institute of Standards and Technology; Michele Manuel, University of Florida; Wei Xiong, University of Pittsburgh; Jason Sebastian, QuesTek Innovations
Tuesday 2:00 PM
February 28, 2017
Location: San Diego Convention Ctr
Session Chair: Michele Manuel, University of Florida ; Wei Xiong, University of Pittsburgh
2:00 PM Keynote
Creating Materials Databases Using X-Ray Tomography: J. Zhang1; S.O. Poulsen2; J.W. Gibbs3; Peter Voorhees2; H.F. Poulsen1; 1Danish Technical University; 2Northwestern University; 3Los Alamos National Laboratory
The materials design process rests on a foundation of materials data. These data can be of many forms. For example, CALPHAD and density function theory methods are commonly employed to determine phase diagrams in the multicomponent alloys of engineering interest and the free energies needed for kinetic models. However, there are many parameters that are central to a design effort and are quite challenging to measure, such as liquid diffusivities and interfacial energies. We outline a method to determine materials parameters using X-ray tomography. The approach uses the microstructure measured at one time as an initial condition in a phase field simulation. Then by comparing the computed and measured microstructures at a later time, we show that it is possible to determine difficult-to-measure materials parameters, such as the solute diffusivity in a liquid metal. The generalization of this approach to other materials parameters will be discussed.
2:40 PM Keynote
The Use of 3D Microstructural Characterization for the Validation of Models: David Rowenhorst1; 1U.S. Naval Research Laboratory
As the field of 3D microstructural characterization continues to advance, it is now possible to make direct comparisons between the predictions of theory and experimental measurements. These efforts have been crucial for validating the prediction of models, and for informing areas that require adjustments to those predictions. This talk will brefily discuss the current methods availble for 3D characterization, and present a number of case studies where 3D microstructural information has been critical for these validations, focusing primarily on large statistical volumes of data that contain thousands of features of interest.
3:20 PM Break
3:50 PM Keynote
Formalizing the Process-Structure-Property-Performance Approach to Materials Design and Development: David Furrer1; Vasisht Venkatesh1; Max Kaplan1; 1Pratt & Whitney
The linkage between material structure and properties has been the focus of materials science and engineering from the early days of engineered materials. The approach for this understanding had previously been substantially by empirical methods of producing material samples, testing and assessing observations. Today, the focus is squarely on the identification of physics-based mechanisms that drive relationships between structure and property. Similarly, efforts to understand structure evolution during processing of materials was largely by empirical trial-and-error methods. Today, the development and application of models that can predict structure evolution and associated resultant mechanical properties has allowed for a formalized process for designing and developing materials and associated manufacturing processes for unique product requirements. This formalized approach can be depicted with an “Olson Diagram” that communicates the critical mechanisms and physics-based models required for any given material system. This talk will review the elements of the “Olson Diagram” and how it can be applied to establish an enhanced integrated engineering framework for materials, manufacturing, and component and system design.
4:30 PM Keynote
GBO, SRG, ICME and MGI - Towards the General Materials Design System: John Agren1; 1Royal Institute of Technology
ICME (Integrated Computational Materials Engineering) and MGI (Materials Genome Initiative) are now firmly established as key ingredients in the design of new materials. GBO (Gregory B Olson) has played a major role in this development. Within the SRG (Steel Research Group), launched by Olson in the 1980ies, the concept of a material as a system and its consequences for materials development was introduced. The concept of “materials by design” was coined. Nowadays “materials by design” can be almost anything with emphasis on ab-initio calculations. The present report will review some of the development within materials by design and identify some key concepts that distinguish Olson’s approach from others. Some recent examples from the center Hero-m (Hierarchic Engineering of Industrial Materials) of successful ICME and materials design will be given. Olson et al. early introduced materials design in education. Some experiences from our own education in materials design will be given.
5:10 PM Concluding Comments