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EBSD and Subtle Crystallographic Differences - A Study of Resolving Interlayer Spacings in Nb-Ni and Nb-Co mu-phases
Lukas Berners, Nisa Ulumuddin, Annika Baum +9
In ordered intermetallics, slight variations in lattice site occupancy and specific interlayer spacings have been identified as the sources of significant changes in critical resol…
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…
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…
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…