Preview the invited speakers who will deliver talks at this year's technical division luncheons and meet the award recipients who will discuss their work at the TMS 2022 Annual Meeting & Exhibition.
Division Luncheon Lectures
Plan to attend some of these special lectures and luncheon events during TMS2022.
Structural Materials Division/Functional Materials Division Luncheon
Speaker:
Kevin J. Hemker, Johns Hopkins University
Lecture Title: "Developing Metal MEMS Materials and Devices with Superior Properties"
Date: Monday, February 28, 2022
Time: Noon to 1:30 p.m.
Location: Anaheim Convention Center, Ballroom E, 3rd Floor
Cost: $50 to receive lunch; purchase your ticket through the
TMS2022 registration form. (You may attend the lecture—without lunch—at no cost.)
About the Presentation
The focus on nanoscience has greatly advanced our ability to synthesize, characterize, and model nanomaterials with unprecedented physical and chemical properties that are derived from dimensional constraints. Nanotwinned low stacking fault metals like copper have received considerable attention due to their high strength and electrical conductivity. Our recent observation of nanotwins in a range of sputter deposited Ni-Mo-W films was unexpected, but subsequent characterization of this material has revealed ultrahigh strengths exceeding 4GPa, temperature invariant coefficient of thermal expansion (CTE), and an exceptional balance of thermal, mechanical, and physical properties that are related to the presence of nanotwins. We have demonstrated the ability to shape and micromachine Ni-Mo-W metal microelectromechanical systems (MEMS) cantilevers with the requisite dimensional precision and stability and the potential to supplant silicon in extreme MEMS applications. The availability of high temperature metal MEMS materials is needed to pave the way for widespread digital monitoring and control that will enable what is widely referred to as the Internet of Things (IoT).
About the Speaker
Kevin J. Hemker is Alonzo G. Decker Chair and Professor of Mechanical Engineering at Johns Hopkins University. He also holds joint appointments in the Departments of Materials Science and Engineering and Earth & Planetary Sciences.
A professional member of TMS since 1991, Hemker served as TMS president in 2018 and for two terms as Public & Governmental Affairs (P&GA) Director on the TMS Board of Directors from 2008 to 2013. He has also contributed as a member of the Titanium, Strategic Planning, and P&GA committees. In 2014, he was elected as a TMS Fellow.
Hemker earned his B.S. in metallurgy from the University of Cincinnati, and his M.S. and Ph.D. in materials science and engineering from Stanford University.
Extraction & Processing Division/Materials Processing & Manufacturing Division Luncheon
Speaker: Paul E. Krajewski, General Motors Global Research and Development Center
Lecture Title: "An Automotive View of Sustainability"
Date: Tuesday, March 1, 2022
Time: 1:00 p.m. to 2:30 p.m.
Location: Anaheim Convention Center, Ballroom E, 3rd Floor
Cost: $50 to receive lunch; purchase your ticket through the
TMS2022 registration form. (You may attend the lecture—without lunch—at no cost.)
About the Presentation
The automotive industry is in the midst of a rapid technology revolution as it shifts to an electric and autonomous future. Materials are critical for this transformation, and the use of sustainable materials and processes is an essential consideration. This talk will establish the framework for thinking about sustainability from initial material production, through vehicle applications, and finally to post-vehicle use or re-use. Issues of sustainability and equity will then be discussed in the context of raw material production, vehicle design and simulation, manufacturing, and recycling. The goal is to help align the scientific community on the sustainability challenge and identify key areas where research is needed to achieve a sustainable future.
About the Speaker
Paul E. Krajewski is the Director of the Vehicle Systems Research Lab at the General Motors (GM) Global Research and Development Center. His laboratory is responsible for R&D in a variety of areas including interior and safety systems, autonomous driving, connectivity, user experience, cybersecurity, displays, and electrical architecture. Krajewski also represents GM as the United States Council for Automotive Research (USCAR) leadership group director and as the technical director for HRL Laboratories. He received his bachelor’s degree and doctorate in materials science and engineering from the University of Michigan. He has led production implementations with aluminum, magnesium, and carbon fiber composites including body panels on the 2014 Corvette Stingray. Krajewski has over 75 publications and has been awarded 54 U.S. Patents. He has been recognized by Fortune magazine (40 under 40) and the MIT Technology Review (TR100) as a leading innovator, is a Fellow of ASM International, and was inducted into the National Academy of Engineering in 2020. He has also published two children’s STEM books entitled What's In Your Car and What's In Your Body.
Light Metals Division Luncheon
Speaker: Markus A. Reuter, SMS Group
Lecture Title: "Light Metals: Key Enabler of the Circular Economy"
Date: Wednesday, March 2, 2022
Time: Noon to 1:30 p.m.
Location: Anaheim Convention Center, Ballroom E, 3rd Floor
Cost: $50 to receive lunch; purchase your ticket through the
TMS2022 registration form. (You may attend the lecture—without lunch—at no cost.)
About the Speaker
Markus Reuter is Senior Expert at SMS Group. Prior to holding this position, Reuter was director at Helmholtz Institute Freiberg for Resource Technology; chief technologist, Ausmelt Australia; and director of technology management, Outotec Australia and Finland. He also worked at Mintek & Anglo American Corporation in South Africa. In addition, he has served as a professor at TU Delft in the Netherlands, has held honorary and adjunct professorships at TU BAF Freiberg in Germany, at Aalto University in Finland, at Central South University in China, and at Melbourne University and Curtin University Perth in Australia. He holds honorary doctorates from the University of Liège in Belgium and the University of Stellenbosch in South Africa; D.Eng. & Ph.D. degrees from Stellenbosch University; and a Dr. habil. from RWTH Aachen in Germany. His recent honors include delivering the 2020 TMS Extraction & Processing Division (EPD) Luncheon Lecture and receiving the 2016 TMS Extraction & Processing Division Distinguished Lecture Award.
His research and industrial interests include process metallurgy, system engineering, process design, optimization and simulation, recycling and design for recycling—all in the context of sustainability and the circular economy paradigm.
About the Presentation
Embracing the circular economy, this lecture will discuss the key enabling role that light metals (aluminum, magnesium, titanium, silicon, and lithium, for example) have in a circular economy. The application of functional light metals and light metal containing materials in various high tech and consumer products will be elaborated on in the context of product design, recycling, and process metallurgy, while discussing process and system simulation tools (flow sheeting, thermodynamic, and FEM methods to describe material liberation, etc.) and digital twins to describe the supply chains within the circular economy in terms of its thermodynamic footprint e.g. exergy. The link of our industry tools to, for example, the Sustainability Development Goals (SDGs) as well to Environmental Social Governance (ESGs) issues will be elaborated on. A key message of the lecture will be to highlight the criticality of metallurgical processing infrastructure within the circular economy to produce high-quality light metals and materials (and products) from primary and secondary sources in the required closed loop of the circular economy. Without a processing industry, all elements become critical. Examples will show recent work to illustrate the state-of-the-art our industry has on offer to play the key driving role in a circular economy society.
Award Lectures
Extraction & Processing Division Distinguished Lecturer
Speaker: David Dreisinger, University of British Columbia
Lecture Title: "Rare Earth and Critical Material Recovery from Peralkaline Volcanic Ores: Minerals Processing, Hydrometallurgy, and Solvent Extraction Separation"
Date: Monday, February 28, 2022
Time: 8:40 a.m.
Location: Anaheim Convention Center, Room 213B
About the Presentation
Rare earth elements are found in many geological settings. Peralkaline volcanic mineralization is found in the Port Hope Simpson Critical Materials District in Labrador, Canada. Minerals such as allanite and fergusonite are found in abundance along with minor chevkinite, bastnasite, and monazite. In some deposits, zircon is present in significant concentrations. The complexity of these materials and the high intrinsic values contained require using every tool in the metallurgical toolkit in order to extract and recover the critical materials present. Conventional mineral processing, hydrometallurgical extraction, and solvent extraction separation are all required to maximize the potential values of the natural deposits.
About the Speaker
David Dreisinger completed his B.A.Sc. and Ph.D. in metallurgical engineering at Queen’s University at Kingston. Since 1984, he has worked at the University of British Columbia in Vancouver, Canada. Since 1992, he has held the position of professor and chair, industrial research chair in hydrometallurgy.
As chair of hydrometallurgy, Dreisinger has had the opportunity with his students and colleagues to conduct research in the hydrometallurgy of base, precious, and rare metals. The results of this research have been documented in over 300 papers and 23 U.S. patents. He has worked closely with industry to commercialize technology. Developments in copper include the Mount Gordon Process, the Sepon Copper Process, and the El Boleo Process. Dreisinger is currently working on commercialization of the PLATSOL Process, the SALT process, the INCOR Lead Process, and the Search Minerals Rare Earth Extraction Process. He has received a number of professional awards, including the Sherritt Hydrometallurgy Award from The Metallurgy and Materials Society of the Canadian Institute of Mining, Metallurgy, and Petroleum (CIM); the Extraction & Processing Division Science Award from TMS; the Milton E. Wadsworth Metallurgy Award from the Society for Mining, Metallurgy, and Exploration; and the INCO Medal from CIM. He is a Fellow of CIM and the Canadian Academy of Engineering.
William Hume-Rothery Award
Speaker: Anton Van der Ven, University of California, Santa Barbara
Lecture Title: "Study of Ferroelectricity and Phase Transitions in Hafnia"
Date: Monday, February 28
Time: 8:35 a.m.
Location: Anaheim Convention Center, Room 255A
About the Presentation
Ferroelectric materials are of considerable interest for memory and logic device applications such as ferroelectric random-access memory (FRAM), ferroelectric field-effect transistors (FeFET) and negative-capacitance field-effect transistors (NC-FET). While much effort has been devoted to ferroelectric perovskites, it is increasingly recognized that a ferroelectric orthorhombic form of HfO2 is in many ways superior. HfO2 can adopt a multitude of polymorphs depending on temperature, dopant/alloy composition, strain state, electric field, and film thickness. In this work, we study the structural phase transformations between orthorhombic HfO2 and its other polymorphs from first principles. By combining density functional theory with the group theory of symmetry, we develop a generalized free energy description that is a function of shuffle order parameters, strain, and dopant composition and connects all known polymorphs of HfO2. The free energy surface provides crucial insights about the coercive field, nucleation barriers for switching, coherent phase equilibrium and twin boundary migration.
About the Speaker
Anton Van der Ven is a professor in the materials department at the University of California, Santa Barbara, where his research areas include functional and quantum materials and structural materials. Van der Ven's research seeks to develop first-principles descriptions of non-equilibrium processes in the solid state with a particular goal of generating an understanding of the mechanisms of phase transformations that couple diffusion and structural changes. His group develops and applies first-principles statistical mechanics methods to predict equilibrium and non-equilibrium materials properties. They study a wide range of materials classes, including transition metal oxides and sulfides for energy storage and conversion devices, metallic alloys for aerospace and automotive applications, and oxides and hydrides of importance in corrosion processes in nuclear applications.
Van der Ven received a Ph.D. in materials from the Massachusetts Institute of Technology and a degree in metallurgy and applied materials science from the Katholieke Universiteit Leuven in Belgium. His honors include a College of Engineering 1938E Award from the University of Michigan; a U.S. National Science Foundation CAREER award; and the Jon R. and Beverly S. Holt Award for Excellence in Teaching from the University of Michigan.
Institute of Metals/Robert Franklin Mehl Award
Speaker: Ke Lu, Chinese Academy of Sciences
Lecture Title: "Schwarz Crystal Structures in Extremely Fine-Grained Metals"
Date: Available on demand beginning March 14
About the Presentation
Metals usually exist in the form of polycrystalline solids, in which the networks of disordered grain boundaries tend to get eliminated through grain coarsening upon heating or straining, or to transform into metastable amorphous states when the grains are small enough. This is why nano-grained metals have a much-reduced stability relative to their coarse-grained counterparts. Through experiments and MD simulations, we recently discovered a new metastable state for extremely fine-grained metals (typically below 10 nm), namely Schwarz crystal structure with 3D minimal interfaces constrained by twin boundaries. The polycrystalline structure is stable against grain coarsening even close to the equilibrium melting point and exhibits a hardness in vicinity of the theoretical value. This presentation will introduce the formation process, structure characteristics, and some properties of the Schwarz crystal structures in a number of pure metals and alloys.
About the Speaker
K. Lu received a B.S. in materials science and engineering from Nanjing University of Science & Technology in 1985 and a Ph.D. in materials science and engineering from the Institute of Metal Research (CAS) in 1990. He is a professor and the founding director of Shenyang National Laboratory for Materials Science (SYNL) at CAS.
His research interests are nanostructured metals and alloys. His identity accomplishments include: (i) Discovery of nano-twinned structures and nano-twin strengthening in metals and alloys that exhibit superior combinational mechanical properties and novel physical properties, and (ii) Development of surface nanocrystallization technology for generating gradient nanostructured metals and alloys, advancing properties and performance such as fatigue behavior, wear and corrosion resistance, and surface alloying kinetics for engineering materials.
He authored and co-authored 410 international journal publications and held 40 patents. He is an elected member of the Chinese Academy of Sciences, a foreign member of the German National Academy of Sciences Leopoldina, and the National Academy of Engineering (USA). He received honors including the Acta Mateialia Gold Medal (2019), Humboldt Research Award (2011), THERMEC Distinguished Award (2006), TWNSO Award in Technology (2000), and Kelly Lecturer (Cambridge, 2010). He is an elected fellow of TMS, the American Association for the Advancement of Science, and the Materials Research Society.
William D. Nix Award Lecturers
Speaker: Huajian Gao, Nanyang Technological University
Lecture Title:"Mechano-Materials: Engineering Mechanical Properties of Materials with Internal Interfaces and Lightweight Structures"
Date: March 2, 2022
Time: 2:00 p.m. to 3:00 p.m.
Location: Anaheim Convention Center, Room 259A
About the Presentation
While conventional mechanics of materials offers passive access to mechanical properties of materials in existing forms, a paradigm shift is emerging towards proactive design of material properties/functionalities by leveraging the force-geometry-property relationships. Such an emerging field can be coined as “mechano-materials.” This talk will discuss a couple of examples of mechano-materials research. The first example is concerned with a nature-inspired design of fatigue-resistant metals with internal interfaces. We report a history-independent and stable cyclic response in bulk copper samples with microstructures mimicking the highly oriented nanoscale twin boundaries in conch shells. We demonstrate that this unusual cyclic behaviour is governed by an unusual type of dislocations called correlated ‘necklace’ dislocations (CNDs). The second example has to do with the design, fabrication, and mechanics of 3D nanolattices with octet- and iso-truss topologies, achieving unprecedented mechanical properties such as specific strength, superior fracture strains and insensitivity to fabrication-induced defects.
Speaker: George Pharr, Texas A&M University
Lecture Title: "Nanoindentation—The Next Generation"
Date: March 2, 2022
Time: 8:30 a.m. to 9:30 a.m.
Location: Anaheim Convention Center, Room 259A
About the Presentation
Since its introduction and development more than three decades ago, nanoindentation has gained widespread acceptance as a tool for measuring and mapping the mechanical properties of thin films, thin surface regions, and small volumes of material. Hardness and elastic modulus are the most routinely measured properties, but techniques have also been developed for estimating fracture toughness, yield stress, strain hardening, creep, strain rate sensitivity, and residual stress. Many of these can be determined from indentations only a few nanometers deep. After briefly reviewing the early history of its development and the crucial roles played by Professor Nix and his colleagues, this presentation will focus on new and emerging nanoindentation measurement tools and techniques. Special attention will be given to recent efforts to perform fully instrumented nanoindentation at very high strain rates in the ballistic range, and new aspects of small-scale mechanical behavior that can be gleaned from multiaxial nanoindentation testing.
About the Speaker
George M. Pharr is professor of materials science and engineering and Erle Nye '59 Chair I at Texas A&M University, College Station, Texas, USA. He received his B.S. in mechanical engineering at Rice University in 1975 and Ph.D. in materials science and engineering from Stanford in 1979. After one year of postdoctoral study at the University of Cambridge, he returned to Rice in 1980 as a faculty member in the Department of Mechanical Engineering and Materials Science. He moved to the Department of Materials Science and Engineering at the University of Tennessee (UT) in 1998 and to Texas A&M in 2017. While at UT, he served as head of the Materials Science and Engineering Department and held a joint faculty appointment at the Oak Ridge National Laboratory (ORNL). Pharr is a member of the National Academy of Engineering and a fellow of three professional societies: TMS, ASM International, and the Materials Research Society. He serves as an associate editor of the Journal of the American Ceramic Society and principal editor for the Journal of Materials Research. His research focuses on mechanisms of plasticity and fracture in solids, especially at small scales.
Young Professional Award Lectures
Young Innovator in the Materials Science of Additive Manufacturing Award Lecture
Speaker: Tao Sun, University of Virginia
Lecture Title: "The Critical Roles of Keyhole in Laser Powder Bed Fusion"
Date: February 28, 2022
Time: 3:55 p.m. to 4:25 p.m.
Location: Anaheim Convention Center, Room 257
About the Presentation
Laser powder bed fusion (LPBF) is the most extensively used metal additive manufacturing technology, owing to its unique capabilities for building parts with high geometry complexity and fine features. In an LPBF process, sparks (i.e. spattered particles) can be observed to follow the laser scanning path, indicating the existence of high-velocity vapor arising from the melt pool. Indeed, strong metal vaporization occurs in LBPF, and the resulting recoil pressure can create a deep vapor depression in the melt pool, which is often referred to as keyhole. Keyhole is a critical dynamic structure feature in LPBF. This presentation will discuss the direct observation of keyhole dynamics using high-speed high-resolution synchrotron x-ray imaging. Based on the morphology and fluctuation mode, keyholes can be categorized as stable and unstable types. Their effects on the effective laser absorption, melt pool morphology development, and generation of various structure defects will be elucidated.
About the Speaker
Tao Sun Tao Sun is an associate professor of materials science and engineering (MSE) at the University of Virginia (UVA). Sun received his B.S. and M.S. in MSE from Tsinghua University, and Ph.D. in MSE from Northwestern University. After his postdoc research at the Advanced Photon Source of Argonne National Laboratory, Sun joined the imaging group as a beamline scientist in 2012 and started to develop and apply high-speed x-ray techniques for studying highly dynamic irreversible and non-repeatable material processes. In 2019, Sun returned to academia and became a faculty member at UVA. Sun has extensive research experience on material structure characterization and metal additive manufacturing (AM). During his Argonne period, Sun pioneered the application of high-speed synchrotron x-ray techniques for operando studies of various metal AM processes. The ability of directly observing and quantifying material dynamics during AM processes helps address many critical issues associated with defect generation, high-fidelity numerical models, and real-time process monitoring. Sun’s UVA team is interested in understanding the physics underlying the energy-matter interactions involved in AM processes, and in developing advanced metallic and composite systems via and for AM.
Young Professional Tutorial Luncheon Lecture
Speaker: Fadi Abdeljawad, Clemson University
Lecture Title:"Interface-Driven Phenomena in Materials: From Nanostructuring to Additive Manufacturing"
Date: Tuesday, March 1, 2022
Time: 1:15 p.m. - 2:15 p.m.
Location: Anaheim Marriott
Cost: $50 to receive lunch; purchase your ticket through the
TMS2022 registration form. (You may attend the lectures—without lunch—at no cost.)
About the Presentation
Grain boundaries (GBs) play a critical role in controlling microstructure formation and evolution during materials processing or under service conditions. Even minute amounts of intended or unintended solutes at GBs result in drastic changes to a wide range of GB dynamical processes. This talk discusses recent research on the thermodynamic and kinetic aspects of GB solute segregation and its impact on GB migration. The discussion will start with a mesoscale formulation of GB segregation in multi-component alloys, then focus on ternary systems. Analytical and computational studies demonstrate a plethora of segregation characteristics greatly influencing grain growth in polycrystalline systems. We then shift our attention to examining segregation behavior of metastable GBs. High throughput atomistic studies are employed to reveal preferential sites for segregation in metastable GBs in binary alloys. Then, gaussian process modeling is used to relate segregation energy to the local atomic environment, where metastable GBs are treated as a source of variability. In broad terms, such studies provide future avenues to unravel segregation effects on GB dynamics, and aid in the design of tailored microstructures by means of controlled manipulation of solute-GB interactions.