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Fumihiro Wakai (National Institute for Materials Science)01/09/2026, 09:00Modelling and simulation of sintering at multiple scales2. Invited speaker (by invitation only)
Recent advances in synchrotron X-ray tomography have shown that real microstructural evolution during sintering is far more complex than assumed in classical models [1]. To understand these complex phenomena and to move beyond a trial-and-error approach in process design, multiscale modeling and simulation of microstructural evolution are required.
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At the particle or mesoscale, various... -
Karel Maca (Brno University of Technology)01/09/2026, 09:30Modelling and simulation of sintering at multiple scales3. Oral presentation
The determination of activation energy of thermally activated processes is conventionally carried out through a series of isothermal experiments and application of the Arrhenius equation. However, this approach cannot be directly applied to ceramic sintering, as it proceeds continuously through multiple stages across a broad temperature interval. The correct determination of non-isothermal...
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Chikako Natsumeda (Saga University)01/09/2026, 09:50Modelling and simulation of sintering at multiple scales3. Oral presentation
This study presents a numerical evaluation of deformation and stress in bulk ceramic bodies induced by internal temperature gradients during the sintering process. Finite element simulations are conducted using a model previously proposed by the authors, in which the total deformation is decomposed into four components: thermal-reversible, thermal-irreversible, mechanical-reversible, and...
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Evan Pereira (Commissariat à l'Energie Atomique)01/09/2026, 10:10Modelling and simulation of sintering at multiple scales3. Oral presentation
In the nuclear fuel industry, sintering is one of the key steps in the manufacturing fuel pellets. This process is driven by the solid-state diffusion of the ceramic, here either undoped/doped. At the microscopic scale, the green pellet consists of UO2 grain clusters. During the sintering, microstructure evolution depends on the competition between bulk, surface and grain boundary diffusion,...
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Charles Maniere (CNRS CRISMAT)01/09/2026, 10:50Modelling and simulation of sintering at multiple scales2. Invited speaker (by invitation only)
Assessing sintering models experimentally is challenging, as it requires isolating both the thermally activated nature of sintering and the powder-specific behavior encoded in the sintering moduli. These parameters often exhibit strong interconnections, necessitating dedicated experiments such as instrumented sinter-forging tests. In parallel, inverse learning strategies based on...
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Dr Baber SALEEM (University of Leicester)01/09/2026, 11:20Modelling and simulation of sintering at multiple scales3. Oral presentation
Predictive simulation of sintering-induced distortion remains challenging for ceramic components subjected to gravity and mechanical constraint. Classical constitutive sintering laws reproduce free densification reliably but lack the flexibility required to capture stress-driven deformation within finite-element (FE) frameworks when calibrated solely from dilatometer data. This study presents...
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Prof. Kazunari Shinagawa (Kyushu University)01/09/2026, 11:40Modelling and simulation of sintering at multiple scales3. Oral presentation
The sintering shrinkage of ceramic powder compacts is large because the organic binder is mixed in forming process, whereas metal powder compacts also experience large sintering shrinkage when formed using metal injection molding or sinter-based additive manufacturing technologies. To analyze the shrinkage deformation of powder compacts in the sintering process, material parameters in a...
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Jens Landgraf (sico-solutions scientific and technical soltuions)01/09/2026, 12:00Modelling and simulation of sintering at multiple scales3. Oral presentation
Sintering is one of the most critical stages in the ceramic manufacturing cycle, as it strongly affects the final properties and quality of ceramic products. The development of controlled process technologies for optimizing firing protocols and reducing production waste is therefore essential for modern ceramic manufacturing.
In this work, a novel process technology is presented that...
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Prof. Laurent Delannay (UCLouvain)01/09/2026, 12:20Modelling and simulation of sintering at multiple scales3. Oral presentation
In conditions of constrained sintering, an aggregate's deformation may involve sliding along the interfaces of contact between particles. The boundary viscosity expressing the resistance to sliding is largely unknown. The motion of each particle is described by two vectors: the velocity of the particle centroid and the particle rotation rate. Interparticle sliding brings the decoupling of the...
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Prof. Tomohiro Takaki (Kyoto Institute of Technology)02/09/2026, 09:00Modelling and simulation of sintering at multiple scales2. Invited speaker (by invitation only)
In solid-state sintering, numerical prediction of microstructure and defect evolution is essential for the creation of high-performance products. The phase-field (PF) method is uniquely capable of accurately capturing both densification and grain growth during sintering. However, the high computational cost of PF sintering simulations remains a major obstacle. In addition, rigid-body motion...
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Vladimir Ivannikov (Helmholtz-Zentrum Hereon)02/09/2026, 09:30Modelling and simulation of sintering at multiple scales3. Oral presentation
The majority of the existing phase-field sintering models is based on the seminal work of Wang that employs Cahn–Hilliard and Allen–Cahn equations to capture mass transport and grain-growth and introduces the concept of sintering forces to handle particle rigid-body motions responsible for shrinkage. However, in the original formulation, these sintering forces are converted to velocities which...
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Dr Akimitsu Ishii (National Institute for Materials Science)02/09/2026, 09:50Modelling and simulation of sintering at multiple scales3. Oral presentation
Phase field (PF) simulation has emerged as a promising tool for predicting microstructural evolution during solid state sintering, offering a continuum framework that can capture neck growth, grain growth, and densification at the nano- and mesoscales. However, PF simulations demand accurate material parameters—such as temperature-dependent diffusion coefficients, interfacial energies, and...
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Marco Seiz (Kyoto Institute of Technology)02/09/2026, 10:10Modelling and simulation of sintering at multiple scales3. Oral presentation
Sintering is an energy-intensive process used in many materials manufacturing routes.
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High heating rate sintering promises to reduce the time and energy costs and possibly achieve better properties as well.
However, it may induce large thermal gradients which can lead to inhomogeneous microstructures and cracks forming.
In this work we seek to further the understanding of how the... -
Prof. Christophe MARTIN (UGA-CNRS)02/09/2026, 10:50Modelling and simulation of sintering at multiple scales2. Invited speaker (by invitation only)
In this presentation, we will review the last advances in discrete element simulations of sintering processes. We present a free in-house code, dp3D, which can tackle the different processes related to powder metallurgy from compaction to sintering. dp3D introduces a coupling between densification and grain-growth. The simplifying assumptions and the limitations of the model are discussed...
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Dr Gerhard Seifert (Fraunhofer ISC)02/09/2026, 11:20Modelling and simulation of sintering at multiple scales3. Oral presentation
A novel integrated microstructure model of sintering (IMS) has been developed to enable the simulation of realistic time-temperature cycles during sintering processes (F. Raether, G. Seifert, Open Ceramics, 25, 2026, 100900). Designed for solid-state sintering processes, the IMS includes grain boundary and surface diffusion, as well as grain growth. To obtain realistic results from the...
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Dr Sota Terasaka (Japan Fine Ceramics Center)02/09/2026, 11:40Modelling and simulation of sintering at multiple scales3. Oral presentation
Most ceramic components are manufactured using a powder sintering process. The ceramic microstructure develops through the interaction of densification and grain growth, which is influenced by various process factors. Therefore, computer simulations are crucial. Among the various simulation techniques, the Monte Carlo (MC) method is a prominent approach. In this study, sintering experiments...
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Yangyiwei Yang (Technische Universität Darmstadt)02/09/2026, 12:00Modelling and simulation of sintering at multiple scales3. Oral presentation
Advanced sintering techniques, distinguished from traditional methods by implementing treatments beyond heat or pressure, have recently gained attention for their efficiency, rapid heating/cooling capabilities, and precise shaping capabilities. The phase-field model has demonstrated its effectiveness in elucidating the in-process evolution of complex structures, taking into account factors...
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68. A mesoscale simulation model of solid state sintering applied to X2CrNiMo17-12-2 stainless steelOliver Schenk (RWTH Aachen University)03/09/2026, 09:30Modelling and simulation of sintering at multiple scales3. Oral presentation
Solid state sintering is governed by self-diffusion processes that induce the formation and growth of sinter necks. This may be accompanied with the successive approach of individual particles to each other that manifests in a macroscopic shrinkage and distortion. In this context, numerous studies contributed to a profound understanding of the interdependence between powder particle size...
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Alexis Burr (Univ. Grenoble Alpes - CEA)03/09/2026, 09:50Modelling and simulation of sintering at multiple scales3. Oral presentation
The Metal Binder Jetting technology (MBJ) is a sinter-based additive manufacturing process gaining increasing interests due to its benefits to quickly produce complex parts for small to medium series. Despite its attractiveness, MBJ still faces many challenges at every stage of the process, such as low green part strengths, repeatability issues and precise control of dimensional accuracy after...
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Victor SZCZEPAN (Safran Tech)03/09/2026, 10:10Modelling and simulation of sintering at multiple scales3. Oral presentation
Sinter-based additive manufacturing (SBAM) encompasses various processes such as Binder Jetting, Fused Filament Fabrication, Metal Injection Molding, Cold Metal Fusion, and many more. These processes involve the same steps: (i) formation of the so-called “green part” from powder and binder, (ii) debinding to remove the binder, and (iii) sintering to densify the part. The SBAM processes offer a...
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Luca Juris (RWTH Aachen University - Digital Additive Production DAP)03/09/2026, 10:50Modelling and simulation of sintering at multiple scales3. Oral presentation
Metal Binder Jetting (BJT-MSt/M) offers high productivity, but sintering distortion limits dimensional accuracy and first time right production. High fidelity finite element (FEM) sintering simulations can predict distortion, yet their runtime restricts design space exploration and rapid design iterations. We present a graph neural network (GNN) surrogate that predicts sintering induced...
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Dr Thomas Grippi (CIRIMAT Toulouse)03/09/2026, 11:10Modelling and simulation of sintering at multiple scales3. Oral presentation
In this study, the anisotropy of parts produced via binder jetting is investigated during sintering across multiple scales, using a coupled kinetic Monte Carlo–Finite Element simulation framework.
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The process begins with the calibration and validation of a microscale Monte Carlo (kMC) sintering model, benchmarked against experimental data obtained through X-ray computed tomography (X-ray... -
Stephan Daniel Schwöbel (Chemnitz University of Technology, Institute of Material Science and Engineering)03/09/2026, 11:30Modelling and simulation of sintering at multiple scales3. Oral presentation
In recent years, advances in the mathematical modelling of sintering processes have led to continuous improvements in simulation efficiency and reliability. Current modelling approaches address different length scales, so from macroscopic simulations of shrinkage effects for offset-geometry design and production error minimization, to microscopic phase-field models that enable detailed...
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