Archives—April 2009

2010 TMS Annual Meeting & Exhibition

Physical Metallurgy Web Page

Professors Drelich and Hwang will organize the 1st International Symposium on High-Temperature Metallurgical Processing that will be part of the 2010 TMS Meeting in Seattle. The Symposium will promote physical and chemical transformations that enable valuable metals recovery and/or the production of pure metals, intermediate compounds, alloys (including steel), or ceramics. Symposium participants will focus on innovative high-temperature technologies including non-traditional heating methods and environmental aspects such as offgas handling and by-product processing. The symposium will also address the need for sustainable technologies that reduce energy consumption and pollutant emissions.






Energy for Sustainability

Friday, April 17, 2009 3:00 – 4:00 pm
Room U113, M&M Building

Trung Van Nguyen
Program Director
CBET Division – Engineering Directorate
National Science Foundation
Arlington, VA

Abstract

Hydrocarbon-based fossil fuels are rapidly depleted. Use of coal-based fuels is expected toincrease leading to environmental concerns. To address these problems, more efficient use ofexisting resources and alternative sources will be needed. I will share some of my views andvision and discuss the potential solutions and challenges and the role of NSF and my Energy forSustainability Program at NSF in this area.

Biography

Trung Van Nguyen was elected to be the first Director for the Energy forSustainability program at NSF and started his position in June 2007.   Concurrently, he alsoholds the title of Professor of Chemical & Petroleum Engineering at the University of Kansas. Hehas a BS from North Carolina State University and MS and PhD from Texas A&M University, allin Chemical Engineering. Prior to joining the faculty at the University of Kansas, he was aPostdoctoral Fellow at Los Alamos National Lab, Senior Product & Process DevelopmentEngineer at Duracell, Associate Director of the Center for Electrochemical Engineering at TexasA&M University, and Member of Technical Staff at AT&T Bell Labs. He has 5 patents, over 75publications, given over 130 presentations, and received awards for research, teaching andservices. He is also a founder of two fuel cell start-up companies. His current research is ontransport and interfacial phenomena in fuel cells and batteries and mathematical modeling ofelectrochemical systems.


X-ray Micro CT for 3D Characterization, Analysis, and Simulation of Multiphase Systems

Friday, April 10, 2009 3:00 – 4:00 pm
Room 610, M&M Building

J.D. Miller
Chair and Ivor D. Thomas Distinguished Professor
Department of Metallurgical Engineering
College of Mines and Earth Sciences
University of Utah

Abstract

Applications of X-ray micro CT for the 3D quantitative characterization, analysis, and simulationof particle/particle bed features, porous structures, phase definition and composition, andmaterial damage will be discussed.  For example, fundamental properties of multiphaseparticles are described in 3D including size, shape, surface area, and spatial variation incomposition.  In addition, 3D pore network structures are identified and used to simulateconstrained fluid flow using the LB method for computational fluid dynamics.  Finally,mechanical properties of multiphase materials are described in 3D including crack size anddensity as well as micro FE analysis of porous structures.

Biography

J.D. Miller is the Department Chair and Ivor Thomas Distinguished Professor ofMetallurgical Engineering at the University of Utah.  He is the recipient of numerous awards andhas served on the faculty at the University of Utah for 41 years.  Professor Miller is a member ofthe National Academy of Engineering and a Distinguished Member of SME.  In 2007 hereceived an Honorary Ph.D. degree from the University of Pretoria in South Africa and anHonorary Professorial Appointment at Central South University, Changsha, PRC.  Morerecently, in 2008, Miller was recognized as a Distinguished Professor of MetallurgicalEngineering at the University of Utah.


Computational Exploration of Domain Self-Accommodation and Self-Assembly in Ferro-Systems

Tuesday, April 7, 2009 3:00 – 4:00 pm
Room G05, Rekhi Hall

Yu U. Wang
Department of Materials Science and Engineering
Virginia Tech

Abstract

In materials science and engineering, self-organized microstructure formation not only directlydetermines the properties and performance of materials, but also provides powerful routes tomaterials design and processing. This talk focuses on the formation and evolution of domains inferro-systems. Two particular examples are considered, namely, ferroic crystals and ferrocolloids. Computer modeling and simulation based on the Diffuse Interface Field Approach(DIFA) will be presented, and applied to the cases of self-accommodation of polar structuraldomains in ferroelectric materials and self-assembly of dipolar particles in ferro-colloids. It isshown that the engineering of self-accommodating domain microstructure and the control ofdomain evolution kinetic pathway during inter-ferroelectric phase transformation provideeffective means to achieve unique combinations of large, reversible and anhysteretic fieldinduced strain attributes. Computational analysis of nanodomain diffraction is also performed totake into account the coherent scattering and interference effects, and to establish links to insitu experiments. In the case of ferro-colloids, it is demonstrated that colloidal particles ofvarious dipole moments, charges, shapes, sizes, and capillary forces within two-phase liquidscan self-assemble into a variety of novel microstructures.

Biography

Dr. Wang joined the Department of Materials Science and Engineering at VirginiaTech in 2004 as an Assistant Professor. He received B.E. degree from University of Scienceand Technology of China in 1994 and Ph.D. degree from Rutgers University in 2001, both inMechanical Engineering. From 2001 to 2004, he worked as postdoctoral researcher in theDepartment of Materials Science and Engineering at Rutgers University. His research focuseson materials theory, modeling, and simulation. Currently, he is working on phase transformingmaterials for advanced properties, colloidal particle self-assembly for novel microstructures,nanodomain diffraction analysis, and development of the Diffuse Interface Field Approach tonew applications


Nanoparticle Materials for Printed Electronics Applications

Friday, April 3, 2009 3:00 – 4:00 pm
Room 610, M&M Building

Professor Jon J. Kellar
Department of Materials and Metallurgical Engineering
South Dakota School of Mines and Technology
Rapid City, SD

Abstract

A variety of silver-based nanoparticles have been manufactured using several processingmethods.  The long-term goal of these nanoparticles is for their use in inks for printedelectronics applications.  Initial work has concentrated on control of particulate manufacturingtechniques, mainly with respect to size and shape.

Characterization of the nanoparticles has been performed using a suite of techniques scanningelectron microscopy, transmission electron microscopy, Raman spectroscopy and x-raydiffraction.

Traces of silver inks were made using the maskless, mesoscale material deposition (M3D).These lines were thermally cured after which the line conductivity was measured.  Atomic forcemicroscopy and differential scanning calorimetry were used to characterize the silver traces.