142 citations · 336 across the 17 of their papers we have counts for
17 papers
Phase-field investigation of non-isothermal solidification coupled with melt flow dynamics
Timileyin David Oyedeji, Aaron Brunk, Yangyiwei Yang +3
Solidification, coupled with melt flow, plays a critical role in determining the microstructure and properties of materials in several manufacturing processes. Phase-field models c…
Thermal and Microstructural Simulations of Photonic Sintering of Oxide Ceramics: A Two-Scale Scheme
Junlong Ma, Yangyiwei Yang, Julian N. Ebert +2
Photonic sintering (PS) offers an ultra-fast, contact-free alternative to conventional sintering and has demonstrated its potential for enhancing the sinterability of acceptor-dope…
Direct observation of nanoscale pinning centers in Ce(Co0.8Cu0.2)5.4 permanent magnets
Nikita Polin, Shangbin Shen, Fernando Maccari +15
Permanent magnets containing rare earth elements are essential components for the electrification of society. Ce(Co1-xCux)5 permanent magnets are a model system known for their sub…
Multiphysics simulations of microstructure influence on hysteresis and eddy current losses of electrical steel
Patrick Kühn, Yangyiwei Yang, Guanyu Chen +3
Improving efficiency of electrical machines requires fundamental knowledge on the mechanisms behind magnetic and eddy current losses of the magnetic core materials, with Fe-Si allo…
Coercivity influence of nanostructure in SmCo-1:7 magnets: Machine learning of high-throughput micromagnetic data
Yangyiwei Yang, Patrick Kühn, Mozhdeh Fathidoost +9
As a pinning-controlled permanent magnet, tailoring the cellular nanostructure of samarium-cobalt-based 1:7-type (SmCo-1:7) magnets remains crucial for improving magnetic performan…
ML-extendable framework for multiphysics-multiscale simulation workflow and data management using Kadi4Mat
Somnath Bharech, Yangyiwei Yang, Michael Selzer +2
As material modeling and simulation has become vital for modern materials science, research data with distinctive physical principles and extensive volume are generally required fo…
What can machine learning help with microstructure-informed materials modeling and design?
Xiang-Long Peng, Mozhdeh Fathidoost, Binbin Lin +2
Machine learning techniques have been widely employed as effective tools in addressing various engineering challenges in recent years, particularly for the challenging task of micr…
Variational approximation for a non-isothermal coupled phase-field system: Structure-preservation & Nonlinear stability
Aaron Brunk, Oliver Habrich, Timileyin David Oyedeji +2
A Cahn-Hilliard-Allen-Cahn phase-field model coupled with a heat transfer equation, particularly with full non-diagonal mobility matrices, is studied. After reformulating the probl…
Elasto-plastic residual stress analysis of selective laser sintered porous materials based on 3D-multilayer thermo-structural phase-field simulations
Yangyiwei Yang, Somnath Bharech, Nick Finger +3
Residual stress and plastic strain in additive manufactured materials can exhibit significant microscopic variation at the powder scale, profoundly influencing the overall properti…
Influence of amorphous phase on coercivity in SmCo5-Cu nanocomposites
Franziska Staab, Yangyiwei Yang, Eren Foya +10
Severe plastic deformation of powder blends consisting of SmCo5-Cu results in magnetically hardened nanocomposite bulk materials. The microstructure is continuously refined with in…
Micromagnetics and Multiscale Hysteresis Simulations of Permanent Magnets
Yangyiwei Yang, Patrick Kühn, Mozhdeh Fathidoost +1
Confronting the unveiled sophisticated multiscale structural and physical characteristics of hysteresis simulation of permanent magnets, notably samarium-cobalt (Sm-Co) alloy, a no…
Tailoring magnetic hysteresis of Fe-Ni permalloy by additive manufacturing: Multiphysics-multiscale simulations of process-property relationships
Yangyiwei Yang, Timileyin David Oyedeji, Xiandong Zhou +2
Designing the microstructure of Fe-Ni permalloy by additive manufacturing (AM) opens new avenues to tailor the materials' magnetic properties. Yet, AM-produced parts suffer from sp…
On existence, uniqueness and stability of solutions to Cahn-Hilliard/Allen-Cahn systems with cross-kinetic coupling
Aaron Brunk, Herbert Egger, Timileyin David Oyedeji +2
A system of phase-field equations with strong-coupling through state and gradient dependent non-diagonal mobility matrices is studied. Existence of weak solutions is established by…
Variational quantitative phase-field modeling of nonisothermal sintering process
Timileyin David Oyedeji, Yangyiwei Yang, Herbert Egger +1
In this work, we present a variational and quantitative phase-field model for non-isothermal sintering processes. The model is derived via an extended non-diagonal phase-field mode…
A thermo-mechanical phase-field fracture model: application to hot cracking simulations in additive manufacturing
Hui Ruan, Shahed Rezaei, Yangyiwei Yang +2
Thermal fracture is prevalent in many engineering problems and is one of the most devastating defects in metal additive manufacturing. Due to the interactive underlying physics inv…
Three-dimensional non-isothermal phase-field modeling of microstructure evolution during selective laser sintering
Yangyiwei Yang, Olav Ragnvaldsen, Yang Bai +2
Predicting the microstructure during selective laser sintering (SLS) is of great interests, which can compliment the current time and cost expensive trial-and-error principle with…
Phase-field modeling of non-isothermal grain coalescence in the unconventional sintering techniques
Yangyiwei Yang, Min Yi, Bai-Xiang Xu +1
A thermodynamically consistent phase-field model is developed to study the non-isothermal grain coalescence during the sintering process, with a potential application to the simula…