Searched for: subject%3A%22Phase%255C+field%22
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Liang, X. (author)
Advanced high strength steels (AHSS) have been widely employed in the automotive industry to meet the requirements of improving crash performance while reducing vehicle weight. The excellent performance of AHSS in strength and ductility comes from a dedicated design of alloy composition and microstructure. However, the addition of some alloying...
doctoral thesis 2024
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Guo, Y. (author), Sharma, S. (author), Kumar, Siddhant (author)
Smooth and curved microstructural topologies found in nature—from soap films to trabecular bone—have inspired several mimetic design spaces for architected metamaterials and bio-scaffolds. However, the design approaches so far are ad hoc, raising the challenge: how to systematically and efficiently inverse design such artificial...
journal article 2024
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ten Eikelder, M.F.P. (author), Van Der Zee, K. G. (author), Akkerman, I. (author), Schillinger, D. (author)
Over the last decades, many diffuse-interface Navier-Stokes Cahn-Hilliard (NSCH) models with non-matching densities have appeared in the literature. These models claim to describe the same physical phenomena, yet they are distinct from one another. The overarching objective of this work is to bring all of these models together by laying down...
journal article 2023
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Mattos Ferreira, V. (author), Mecozzi, M.G. (author), Petrov, R.H. (author), Sietsma, J. (author)
The austenitization of an initial pearlitic microstructure is simulated using the phase field model to achieve insight into White Etching Layer (WEL) formation in pearlitic railway steels. The simulations take into account the resolution of the cementite lamellae within a pearlite colony as well as the presence of pro-eutectoid ferrite. The...
journal article 2023
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Liu, Z. (author)
doctoral thesis 2022
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Raman, Raghavendran (author)
Efficient combustion processes are indispensable in limiting the temperature increase to 1.5 deg C as set by Intergovernmental Panel on Climate Change (IPCC) before 2030 to curtail the effects of global warming. As for the emissions, the main task lies in controlling the air-fuel ratio in the lean regime as to control the emissions of NOx since...
master thesis 2021
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ten Eikelder, M.F.P. (author), Akkerman, I. (author)
Two well-established classes of the interface capturing models are the level-set and phase-field models. Level-set formulations satisfy the maximum principle for the density but are not energy-stable. On the other hand, phase-field models do satisfy the second law of thermodynamics but lack the maximum principle for the density. In this paper...
journal article 2021
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Koufis, Stratos (author)
Quenching and partitioning (Q&P) is a novel processing route that can create microstructures that combine high strength, ductility and easy formability without the excess use of alloying elements by also keeping the production cost low. Therefore, this method is ideal to be applied to steels that are used in the automotive industry. The...
master thesis 2020
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Lepillier, B.P. (author)
In 2020, as the world Energy demand keeps on rising (International Energy Agency (IEA), 2019), and with the global climate warming a reality (The Organisation for Economic Co-operation and Development (OECD), 2020), reducing our societal impact on Earth is of utmost importance. Energy and Climate have always been intrinsically related. Therefore...
doctoral thesis 2020
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Hosseini, Babak Sayyid (author), Möller, M. (author)
In this work, we consider a Cahn–Hilliard phase field-based computational model for immiscible and incompressible two-component liquid flows with interfacial phenomena. This diffuse-interface complex-fluid model is given by the incompressible Navier–Stokes–Cahn–Hilliard (NSCH) equations. The coupling of the flow and phase field equations is...
conference paper 2020
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Lepillier, B.P. (author), Yoshioka, Keita (author), Parisio, Francesco (author), Bakker, R.R. (author), Bruhn, D.F. (author)
In every tight formation reservoir, natural fractures play an important role for mass and energy transport and stress distribution. Enhanced Geothermal Systems (EGS) make no exception, and stimulation aims at increasing the reservoir permeability to enhance fluid circulation and heat transport. EGS development relies upon the complex task of...
journal article 2020
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Yu, H. (author), Xu, W. (author), van der Zwaag, S. (author)
In this work, we combine a generic alloy-by-design model with a novel concept, the nucleation barrier for the formation of Laves phase to fill the creep cavities, in order to develop multi-component creep resistant steels with kinetically tuned self-healing behaviour. In the model the high-temperature long-term strength is estimated by...
journal article 2020
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de Klerk, N.J.J. (author)
Batteries have found widespread use, especially in mobile devices. With the inevitable energy transition the demand for batteries will rise further. Batteries for large-scale storage, transport applications and mobile devices all have different demands, requiring the development of a range of battery types for the storage of electrical energy....
doctoral thesis 2019
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Farahani, H. (author), Zijlstra, Gerrit (author), Mecozzi, M.G. (author), Ocelík, Václav (author), De Hosson, Jeff Th M. (author), van der Zwaag, S. (author)
In this research, in situ high-temperature electron backscattered diffraction (EBSD) mapping is applied to record and analyze the migration of the α/3 interfaces during cyclic austenite-ferrite phase transformations in a medium manganese steel. The experimental study is supplemented with related 3D phase field (PF) simulations to better...
journal article 2019
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Ayenampudi, S. (author), Celada-Casero, Carola (author), Mecozzi, M.G. (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)
other 2018
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Gao, H. (author), Agarwal, G. (author), Amirthalingam, M. (author), Hermans, M.J.M. (author)
Hot cracking during laser welding of advanced high-strength steels is reported to be a serious problem by automotive manufacturers. In this work, hot cracking susceptibilities of transformation-induced plasticity (TRIP) and dual-phase (DP) steels are studied based on a multi-scale modelling approach. Transient temperatures measured from...
journal article 2017
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Pundir, M. (author)
Fracture mechanics based computational methods are becoming increasingly important to study the structural integrity and failure of materials and structures used in engineering applications. One challenging aspect for computational methods is the analysis of crack nucleation and propagation in complex geometries or in materials with...
master thesis 2016
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Savran, V.I. (author)
The production process of almost all modern steels involves austenitization formation of the austenite phase upon continuous heating. Many of the microstructural features and properties that are obtained upon subsequent cooling are to a large extend determined by the evolution of the microstructure and chemical inhomogeneities during...
doctoral thesis 2009
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Mecozzi, M.G. (author)
Abstract not available
doctoral thesis 2007
document
Thiessen, R.G. (author)
Abstract not available
doctoral thesis 2006
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