This topic focuses on the relationships between the structure of materials and their properties and performance. Regardless of the material class being metallic, ceramic, polymeric or composite, an understanding of the structure-property relationships provides a scientific basis for developing engineering materials for advanced structural applications. Contributions are sought from both, fundamental and applied research in this field responding to the ever-increasing demand for improved and better-characterized materials.
We are presently experiencing the complete transformation of the alloy development and manufacturing cycles, which are transitioning from the traditional trial-and-error approach to a new knowledge-based methodology. At the same time, the ever-growing demand of the power, automotive, and aerospace sectors is fueling the development of new high-strength alloys with complex microstructures and chemistries and the utilization of conventional materials in increasingly aggressive conditions. As a result, in the past five years, many high-strength alloys, particularly precipitation-hardening nickel alloys and stainless steels, have been found prone to environmentally assisted cracking (EAC), even in environments deemed a priori benign.
This symposium seeks original research articles focused on EAC of high-strength materials, including but not limited to low alloys steels, stainless steels, high entropy alloys, nickel-, aluminum-, and titanium-based alloys produced by traditional and unconventional fabrication processes such as additive manufacturing. Specifically, the goal of the symposium is to address how the compound interplay between microstructure, stress, and environmental conditions affects EAC resistance, which will aid in establishing safe environmental boundaries. Research combining traditional approaches and modern techniques, including in situ testing and high-resolution analysis and characterization tools are encouraged as they will provide an entirely new perspective for the examination of the various forms of EAC. Further research aiming to develop predictive models or multiscale physics-based approaches to understand the EAC mechanism and predict the lifetime of structural materials in harsh environments are welcome.
Afrooz Barnoush - Norwegian University of Science and Technology, Department of Mechanical and Industrial Engineering, Norway
Roy Johnsen - Norwegian University of Science and Technology, Department of Mechanical and Industrial Engineering, Norway
Mariano Iannuzzi - Curtin Universtiy, Department of Chemical Engineering, Australia
Mariano A. Kappes - National Scientific and Technical Research Council, Argentina
This symposium is supported by
Tribology, the science of interacting surfaces in relative motion, is crucial for many aspects of modern life. Friction and wear decisively impact the lifetime and durability of many products from nanoelectro-mechanical systems to gears and engines. For instance, during sliding of metallic contacts mutated surface layers form on different length scales. These layers carry most further plastic deformation and largely determine friction and wear. The origin and evolution of these distinct subsurface layers as well as the other atomistic to macroscale mechanisms remain elusive. This knowledge however will allow for a strategic tailoring of tribologically loaded metals. To achieve this goal, this symposium brings together simulation and experimental experts working on all lengths scales relevant to tribology. This begins on a macroscopic tribometer scale, over the mesoscopic nanoindenter-, down to the atomistic AFM- and molecular dynamics-scale.
Christian Greiner - Karlsruhe Institute of Technology, Institute for Applied Materials, Germany
Steffen Brinckmann - Max-Planck-Institut für Eisenforschung GMBH, Experimental Nanotribology, Germany
Sylvie Descartes - Université de Lyon, LaMCoS, CNRS, INSA-Lyon UMR5259, France
Filippo Mangolini - University of Leeds, School of Mechanical Engineering, Great Britain
Additive manufacturing (AM) of metals has strongly gained scientific and industrial importance during the last decades due to the geometrical flexibility and increased reliability of parts, as well as reduced equipment costs. Although metal AM parts are already in use for many applications in various industries, the complex interactions between energy source, atmosphere and feedstock that govern the microstructure evolution are not fully understood. Therefore, prediction of the final properties, which is utterly desired for wide-spread industrial applicability of AM parts, still cannot be accomplished straightforward.
This symposium will address recent advances in improving the understanding of process-microstructure-property relationships in additively manufactured high-performance alloys. In addition to experimental characterization, submission of studies focusing on simulation is highly encouraged. Topics of interest include but are not restricted to:
Christian Haase - RWTH Aachen University, Department of Ferrous Metallurgy, Germany
Thomas Niendorf - University of Kassel, Institute of Materials Engineering, Germany
Andrey Molotnikov - Monash University, Materials Science and Engineering, Australia
Moataz Attallah - University of Birmingham, School of Metallurgy and Materials, Great Britain
Manipulation of the chemistry and the microstructure are the two classical approaches to develop new materials. Over the centuries, fabrication methods like alloying and thermo-mechanical processing have been systematically exploited to achieve desired properties. Although very successful, these techniques have now reached their limits and to design new materials with unprecedented properties, different approaches should be pursued.
Architected materials are multi-phase and/or cellular materials allowing for the tailoring of a vast range of property combinations depending on the spatial layout of their constituent materials. Over the past years, the pattern sizes of architected materials have been reduced to the micro- and nanoscale using high-resolution additive manufacturing techniques like micro-stereolithography, photopolymer waveguide prototyping, and direct laser writing, as well as self-assembly techniques, dealloying and hierarchical approaches like direct foam printing. Allowing for the exploitation of unique size-affected material properties or photonic and phononic phenomena, micro- and nanoarchitected materials have redefined the limits of the accessible material property space throughout different disciplines.
This symposium will cover the recent advances in the field of materials which feature micro- and nanoscale architecture and/or porosity, such as micro- and nanolattices, nanoprous foams, spinodal- and opaline-based structures and hierarchical/biomimetic nanocomposites.
Topics will include (but will not be limited to):
Jens Bauer - University of California, Irvine, USA
Tobias Schaedler - HRL Laboratories, USA
Christoph Eberl - Fraunhofer Institute for Mechanics of Materials, Germany
Bulk ultrafine- and nanostructured materials have recently attracted growing scientific interest. This symposium focuses on all aspects of science and technology for such materials that typically show grain sizes below ~ 1000 nm. It provides a forum to present and discuss latest research on processing including conventional and emerging technologies via top-down (e.g. severe plastic deformation) and bottom-up (e.g. inert gas condensation and compaction) techniques as well as fundamental aspects regarding UFG microstructures, strength, ductility, work-hardening, fatigue, corrosion, creep and fracture.
The symposium will cover the following topics:
Martin Wagner - Technische Universität Chemnitz, Mechanical Engineering, Germany
Philipp Frint - Technische Universität Chemnitz, Mechanical Engineering, Germany
Recent developments in single-phase High Entropy Alloys (HEA) and multi-phase Compositionally Complex Alloys (CCA) will be considered. In both cases, the alloys should fulfill the often used requirement for HEA ̶ consisting of several elements (in general > 4) that possess equal or nearly-equal atomic concentrations. All possible alloy families will be taken into consideration. A special emphasis should be given to the processing history, i.e. material manufacturing, heat treatment as well as sample preparation. All kinds of materials properties are of interest, with a particular focus on mechanical properties. Studies on phase stability, microstructure on all length scales, dislocation morphology, and diffusion in HEA and CCA are welcome. Appropriate submissions should include scientific and/or engineering factors dealing with property correlations, e.g. microstructure ̶ mechanical properties. Papers addressing unique or outstanding properties or phenomena that cannot be found in conventional alloys are particularly encouraged.
Uwe Glatzel - Universität Bayreuth, Faculty of Engineering Science, Germany
Bronislava Gorr - University Siegen, Department Maschinenbau, Germany
Anna Manzoni - Helmholtz Zentrum Berlin, Institute Applied Materials , Germany
Mechanical properties of materials are mainly determined by their microstructure. Improved synthesis routes, e.g. severe plastic deformation (SPD), electrochemical deposition, etc. allows the production of tailored microstructures down to the nanometer regime, which in turn exhibit extraordinary mechanical properties. The focus of this symposium is on understanding the material properties vs. structure relationship for fine grained and nanostructured materials. In this context, not only the behavior of monolithic ultra-fine grained and nanocrystalline materials are of interest, but also tailored materials and nano-composites are in focus. Properties of interest include, but are not limited to, strength and ductility, fracture toughness, fatigue resistance, as well as deformation and damage mechanisms. Also, contributions on process and microstructure controlling synthesis parameters for tailoring microstructures and investigations on microstructure stability during thermal and/or mechanical loading of these materials are welcome.
Andrea Bachmaier - Austrian Academy of Science, Erich-Schmid-Institute for Materials Science, Austria
Daniel Kiener - Montanuniversität Leoben, Department Material Physics, Austria
Bernd Gludovatz - University of New South Wales, School of Mechanical and Manufacturing Engineering, Australia
Christian Motz - Universität des Saarlandes, Department of Materials Science and Engineering, Germany
In the last years, the steel industry has been making a sustained effort to innovate and create advanced steels and production methods to fulfill the needs of materials with continuously growing demand for property enhancement. Microstructural refinement linked to chemical composition design and process control is the most promising combination towards steels with unique and compelling properties. In addition to existing and emerging strategies for microstructural and metallurgical design, this Symposium will also include recent developments in steel characterization methods, simulations, and modeling.
Proposed theme areas (but not limited to):
Pello Uranga - Ceit-IK4, Thermomechanical Treatments Group, Spain
Martin Valdez - Materials Department at TENARIS, Argentina
Roumen Petrov - Ghent University, Department of Electrical Energy, Systems and Automation, Belgium
Horst Biermann - TU Bergakademie Freiberg, Institute of Materials Engineering, Germany
Wolfgang Bleck - RWTH Aachen University, Department of Ferrous Metallurgy, Germany
Ulrich Prahl - TU Bergakademie Freiberg, Institute of Metal Forming, Germany
Global growth rates for the production and application of light metals (including aluminium and magnesium alloys) have surpassed those of more conventional structural materials (such as steel) due in part to their role in meeting the continuously increasing demand for weight saving in the transport-vehicle industries. In line with that, research and development efforts have led and are leading to notable advances in light-metal alloys and their processing that justify a symposium on its own.
Thus, the symposium welcomes contributions relating to its title that cover – but are not limited to – the design and tailoring of monolithic and of composite cast and wrought metals and alloys, as well as the manufacturing of semi-finished and finished products with such processes as DC casting, rolling, extrusion, sheet-metal forming and joining, shape casting, powder metallurgy, and up to and including technologies for their recycling and reuse. The focus of the symposium is on structural use. Subjects that are highlighted by other thematic symposia in this conference (like advanced characterization, coating/corrosion, and hybrid structures) are exempted. Symposium presentations will be arranged as keynote lectures with invited speakers, highlight and regular lectures with contributing speakers, as well as of oral and regular posters.
Jürgen Hirsch - RWTH Aachen University, Institue of Physical Metallurgie and Metal Physics, Germany
David DeYoung - Alcoa Technical Center & TMS President, USA
In the final programme, Symposium S09 will be part of Symposium S07.