dislocation networks 1in situ transmission electron microscopy 1lattice misfit 1phase-field crystal simulations 1precipitate growth 1semicoherent interfaces 1
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cond-mat.mtrl-sci2026
Dislocation-ledge coupling governs semicoherent precipitate growth
Jin-Yu Zhang, Juan Du, Lin Yang +3
The paper investigates how dense interfacial dislocation networks move and reorganize during semicoherent precipitate growth, using in situ TEM, O‑lattice analysis, and 3D phase‑fi…
cond-mat.mtrl-sci2026
Negative Strain-Rate Sensitivity in Metallic Glasses Driven by Rejuvenation-Relaxation Competition: Kinetic Monte Carlo Simulations and a Minimal Effective Model
Tomoaki Niiyama, Akio Ishii, Takahiro Hatano +2
When strain-rate sensitivity (SRS) is negative in metallic glasses, the material becomes weaker as the deformation rate increases, leading to accelerated plastic deformation and, e…
cond-mat.mtrl-sci2025
Dual Role of Nb in Defect-Mediated Strength and Ductility of γ-TiAl Alloys
Zhiqiang Zhao, Siyao Shuang, Kepeng Ouyang +8
The origin of the superior high-temperature strength of γ-TiAl with high Nb addition remains highly controversial, largely due to the unclear role of Nb atoms. Using large-scale h…