67 citations · 420 across the 42 of their papers we have counts for
47 papers
Quantification of plastic deformation in anorthite using micropillar compression
Sarah Incel, Chunhua Tian, Anja Schreiber +2
Plagioclase is the most abundant mineral group of the crust and will therefore either control or strongly influence crustal rheology. Yet, we still know little about crystal plasti…
Defect-controlled twin activation in crystallographically equivalent magnesium micropillars
Hexin Wang, Fatim Zahra Mouhib, Chunhua Tian +6
Tensile twinning plays a central role in accommodating <c>-axis plasticity in Mg. In bulk Mg, it typically shows a relatively deterministic response with a low critical stress, whe…
Chemically tailored planar defect phases in the Ta-Fe μ-phase
Christina Gasper, Nisa Ulumuddin, Siyuan Zhang +5
Intermetallics often exhibit complex crystal structures, which give rise to intricate defect structures that critically influence their mechanical and functional properties. Despit…
First-Principles Insights into the Site Occupancy of Ta-Fe-Al C14 Laves Phases
Nisa Ulumuddin, Sandra Korte-Kerzel, Zhuocheng Xie
This study investigates the site occupancy preferences of Al in Ta(FeAl) Laves phases using first-principles calculations, covering Al concentrations from 0 to 50 a…
Resolution Enhancement of Scanning Electron Micrographs using Artificial Intelligence
Tom Reclik, Setareh Medghalchi, Philipp Schumacher +4
Scanning Electron Microscopy (SEM) is pivotal in revealing intricate micro- and nanoscale features across various research fields. However, obtaining high-resolution SEM images pre…
Mechanical properties and deformation mechanisms of the C14 Laves and μ-phase in the ternary Ta-Fe(-Al) system
Christina Gasper, Elif Merve Soysal, Nisa Ulumuddin +4
As structural and functional materials, topologically close-packed (TCP) phases of transition metal compounds offer a wide range of attractive properties. Due to their complex crys…
Beyond Fundamental Building Blocks: Plasticity in Structurally Complex Crystals
Tobias Stollenwerk, Pia Carlotta Huckfeldt, Nisa Zakia Zahra Ulumuddin +3
Intermetallics, which encompass a wide range of compounds, often exhibit similar or closely related crystal structures, resulting in various intermetallic systems with structurally…
Grain boundary segregation spectrum in basal-textured Mg alloys: From solute decoration to structural transition
Anumoy Ganguly, Hexin Wang, Julien Guénolé +4
Mg alloys are promising lightweight structural materials due to their low density and excellent mechanical properties. However, their limited formability and ductility necessitate…
Predicting Grain Boundary Segregation in Magnesium Alloys: An Atomistically Informed Machine Learning Approach
Zhuocheng Xie, Achraf Atila, Julien Guénolé +3
Grain boundary (GB) segregation in magnesium (Mg) substantially influences its mechanical properties and performance. Atomic-scale modelling, typically using ab-initio or semi-empi…
Influence of chemical composition on the room temperature plas-ticity of C15 Ca-Al-Mg Laves phases
Martina Freund, Zhuocheng Xie, Pei-Ling Sun +8
The influence of chemical composition changes on the room temperature mechanical proper-ties in the C15 CaAl2 Laves phase were investigated in two off-stoichiometric compositions w…
Nanoscale brittle-to-ductile transition of the C15 CaAl Laves phase
Anwesha Kanjilal, Ali Ahmadian, Martina Freund +4
The influence of temperature on the deformation behaviour of the C15 CaAl Laves phase, a key constituent for enhancing the mechanical properties of Mg alloys up to service temp…
Automated Segmentation of Large Image Datasets using Artificial Intelligence for Microstructure Characterisation, Damage Analysis and High-Throughput Modelling Input
Setareh Medghalchi, Joscha Kortmann, Sang-Hyeok Lee +3
Many properties of commonly used materials are driven by their microstructure, which can be influenced by the composition and manufacturing processes. To optimise future materials,…
Solute Co-Segregation Mechanisms at Low-Angle Grain Boundaries in Magnesium: A Combined Atomic-Scale Experimental and Modeling Study
Risheng Pei, Joé Petrazoller, Achraf Atila +10
Solute segregation at low-angle grain boundaries (LAGBs) critically affects the microstructure and mechanical properties of magnesium (Mg) alloys. In modern alloys containing multi…
Origins of limited non-basal plasticity in the μ-phase at room temperature
W. Luo, C. Gasper, S. Zhang +7
We unveil a new non-basal slip mechanism in the μ-phase at room temperature using nanomechanical testing, transmission electron microscopy and atomistic simulation. The (1-105) pla…
Exploring Solute Behavior and Texture Selection in Magnesium Alloys at the Atomistic Level
F. Mouhib, Z. Xie, A. Atila +3
This study advances our understanding of how chemical binding and solute distribution impact grain boundary segregation behavior and subsequent annealing texture modification in le…
A New Approach to Measure Fundamental Microstructural Influences on the Magnetic Properties of Electrical Steel using a Miniaturized Single Sheet Tester
Nora Leuning, Martin Heller, Markus Jaeger +2
Magnetic properties of electrical steel are usually measured on Single Sheet Testers, Epstein frames or ring cores. Due to the geometric dimensions and measurement principles of th…
Orientation relationship of FeNiC and FeNiCSi from variant detection in EBSD data
Mattis Seehaus, Risheng Pei, Sandra Korte-Kerzel +1
The determination of orientation relationships in dual or multi-phase materials is very important in the field of interface engineering for the design of materials with tailored pr…
Rate dependence of damage formation in metallic-intermetallic Mg-Al-Ca composites
Setareh Medghalchi, Muhammad Zubair, Ehsan Karimi +3
We study a cast Mg-4.65Al-2.82Ca alloy with a microstructure containing -Mg matrix reinforced with a C36 Laves phase skeleton. Such ternary alloys are targeted for elevated temp…
Metallurgical synthesis methods for Mg-Al-Ca scientific model materials
W. Luo, L. Tanure, M. Felten +10
Mg-based alloys are industrially used for structural applications, both as solid solutions alloys and as composites containing intermetallic compounds. However, a further developme…
On the temperature and chemical dependency of prismatic stacking faults in C14 Laves phases
Zhuocheng Xie, Dimitri Chauraud, Erik Bitzek +2
Activation of non-basal slip is essential in improving the deformability of hexagonal crystals. However, the mechanism of non-basal slip remains largely unknown, especially for com…
Three-Dimensional Damage Characterisation in Dual Phase Steel using Deep Learning
Setareh Medghalchi, Ehsan Karimi, Sang-Hyeok Lee +3
High performance sheet metals with a multi-phase microstructure suffer from deformation induced damage formation during forming in the constituent phases but importantly also where…
Tailoring the plasticity of topologically close-packed phases via the crystals' fundamental building blocks
Wei Luo, Zhuocheng Xie, Siyuan Zhang +10
Brittle topologically close-packed precipitates form in many advanced alloys. Due to their complex structures little is known about their plasticity. Here, we present a strategy to…
Thermally activated nature of synchro-Shockley dislocations in Laves phases
Zhuocheng Xie, Dimitri Chauraud, Achraf Atila +3
Synchro-Shockley dislocations, as zonal dislocation, are the major carrier of plasticity in Laves phases at high temperatures. The motion of synchro-Shockley dislocations is compos…
Strengthening of Mg-Al-Ca alloys with C15 and C36 Laves phases
Mhammad Zubair, Stefanie Sandlöbes-Haut, Risheng Pei +3
The Laves phase skeleton in cast Mg-Al-Ca alloys is known to provide considerable strengthening. Laves phases such as CaMg (C14), Ca(Al,Mg) (C36), and CaAl2 (C15) have high…