Plenary Speakers
Our lineup features exceptional speakers who will delve into captivating topics that resonate with all attendees.
Sessions
Precipitation in age hardenable aluminium alloys studied by advanced TEM
Challenges and future directions pertaining to in-situ characterization in additive manufacturing
The Future of Responsible Aluminium: Connecting the entire value chain metals
Randi Holmestad
Plenary Speaker
Norwegian University of Science and Technology (NTNU)
Read Randi's Bio
Randi Holmestad has been a professor at Department of Physics, NTNU, Trondheim, Norway since 1999. She completed her PhD in materials physics (on quantitative convergent beam electron diffraction) from the same university in 1994. Holmestad’s present research interests are focused on materials physics; transmission electron diffraction and microscopy (TEM), materials microstructure and the relations to macroscopic properties. Her research group has high expertise in using advanced TEM techniques to study (aluminium) alloys, scanning TEM, and different diffraction techniques, including scanning precession electron diffraction (SPED). Holmestad has had several sabbaticals abroad, latest at University of Illinois, Urbana-Champaign, IL, USA, in 2005 and 2012, and at Monash University, Australia for 2 months during fall 2019. She is the leader of the NORTEM infrastructure project, the TEM Gemini Centre, a program head in SFI PhysMet.
Monday, July 7 at 16:00
Plenary Session
Precipitation in age hardenable aluminium alloys studied by advanced TEM
Abstract
Age hardenable aluminium alloys – 2xxx, 6xxx and 7xxx – are important structural materials for construction and automotive applications due to properties like high strength/weight ratio and good formability, often combined with good corrosion resistance. These alloys obtain strength via nanoscale precipitates, made up by alloy elements in the aluminium matrix. Alloy composition and thermo-mechanical history of the material give the distribution, size etc of precipitates which to a large extent decide the material’s physical properties. With the increasing demands of recycling and use of post-consumer scrap, it is becoming more important to improve understanding of the fundamental physics taking place at the atomic scale, which governs nucleation, phase stabilization and precipitation in these alloys. Our research group at NTNU and SINTEF in Trondheim has over a long period worked together with the Norwegian light metal industry on detailed studies of nanoscale precipitates in aluminium alloys. This presentation will show some recent examples from our work using advanced (scanning) transmission electron microscopy ((S)TEM) based techniques to study precipitates. The scanning precession electron diffraction (SPED) technique, combined with machine learning approaches and post-processing has been a valuable tool for investigating the evolution of precipitate phases during artificial ageing and get statistically valid information about precipitate morphology, phase compositions, as well as crystallite orientations, also in deformed materials. Atomic structure is determined using aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), often in combination with density functional theory calculations
Nikhil Gupta
Plenary Speaker
Professor
Department of Mechanical and Aerospace Engineering
New York University, Tandon School of Engineering
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Dr. Nikhil Gupta is a Professor in the Mechanical and Aerospace Engineering Department at the New York University Tandon School of Engineering. He is also affiliated with Center for Cybersecurity. His research interests include developing lightweight porous composites materials, additive manufacturing and materials characterization methods. His research on composites and additive manufacturing has been supported by The National Science Foundation, Office of Naval Research, Army Research Lab and other agencies. He is an elected Fellow of the American Society for Composites and the ASM International and an elected Senior Member of IEEE and the National Academy of Inventors.
Tuesday, July 8
Plenary Session
The Future of Responsible Aluminium: Connecting the entire value chain metals
Abstract
The continuous development of novel materials with improved properties and functionalities, necessitates the evolution of characterization methods. Digital manufacturing cyber-physical system has allowed integrating design tools with the additive manufacturing methods on the same platform to accelerate materials and product development cycles. However, post-manufacturing imaging and characterization remain a major challenge in further accelerating the materials development cycle because they consume significant time. Developing characterization methods that can conduct in-situ measurements while the part is being manufactured can help in reducing or eliminating the requirement of post-manufacturing testing. A variety of sensors are now integrated in the build chamber of 3D printers, which include optical and thermal cameras, acoustic sensors, and vibration sensors. Image analysis can provide information about the size, shape and location of defects in the printed parts. However, quantitative measurement of mechanical properties from these methods remains a challenge. This talk discusses a framework where frequency domain measurements can be used to accelerate the materials characterization at a very small material expense. In addition, some of the non-destructive characterization methods can be extended to implement inside the build chambers to obtain quantitative mechanical measurements. Such a procedure is able to significantly reduce the time and effort required to characterize the material over a large range of temperatures and strain rates and accelerate the materials development.
Saurabh Sedha
Plenary Speaker
Manager, Aluminium Technical Marketing
Rio Tinto
Read Saurabh's Bio
Saurabh Sedha is a Materials Engineer with deep expertise in aluminum extrusions and titanium. As Manager, Technical Marketing at Rio Tinto, he collaborates closely with the Sales & Marketing teams as Rio’s billet subject matter expert in North America, specializing in technical solutions, product development, and process optimization. With a career spanning various roles across the US with Sapa Extrusion North America, TechnipFMC, and Arconic, Saurabh has extensive experience in metallurgy, extrusion, forging, supplier quality, and aerospace materials. His work has impacted industries ranging from automotive and aerospace, to manufacturing and construction. Beyond his professional contributions, Saurabh is an avid traveler (having visited over 40 countries), a passionate cook and host, and an enthusiast of sports, Scotch, and vinyl records.
Thursday, July 10
Plenary Session
Precipitation in age hardenable aluminium alloys studied by advanced TEM
Abstract
The presentation will talk about how Rio Tinto is playing a vital role in progressing towards a low carbon world, pushing towards net-zero, while looking at the entire value chain. It will also talk about specific initiatives, including, but not limited to transparency, traceability, and provenance across value chains to customers and end users can see the entire story – from mine to market.
