Critical parameters in controlling dislocation nucleation at twisted semicoherent interfaces

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F25%3A10258675" target="_blank" >RIV/61989100:27240/25:10258675 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/25:10500265 RIV/61989100:27740/25:10258675
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S092702562500463X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S092702562500463X?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.commatsci.2025.114120" target="_blank" >10.1016/j.commatsci.2025.114120</a>

Result language
angličtina
Original language name
Critical parameters in controlling dislocation nucleation at twisted semicoherent interfaces
Original language description
Hetero-phase interfaces typically accommodate misfit dislocations, which dominate the interface-facilitated plasticity. Despite advancements in understanding such plasticity, the complexity of interface degrees of freedom has overshadowed the exploration of related dependent parameters. In this study, we present a novel investigation to systematically analyze critical parameters influencing dislocation nucleation at semicoherent interfaces by twisting one phase against the other. Our results reveal variations in critical nucleation stress with node distance, line-orientation misalignment, and spiral features around the nodes. To quantify these correlations semi-quantitatively, we propose Orowan and misalignment descriptors that incorporate the effect of node distance and the combined influence of line-orientation misalignment and spiral features around the nodes. These descriptors determine transitions from Friedel-Escaig-like to partially aligned, fully aligned, and misaligned Fleischer-like cross-slip mechanisms. These findings establish a clear structure-property relationship at hetero-phase interfaces and enable high-performance alloy design through interface engineering.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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