Webtermed as grain boundary segregation engineering [4] or complexion engineering [5]. In this context, understanding the formation of different grain boundary chemical states and identifying their compositions is of importance to the material science community. In this work, we developed a simple, yet efficient, methodology: producing a ... WebSep 23, 2015 · Nanocrystalline Cu-3 at.% Zr powders with ~20 nm average grain size were created with mechanical alloying and their thermal stability was studied from 550–950°C. Annealing drove Zr segregation to the grain boundaries, which led to the formation of amorphous intergranular complexions at higher temperatures. Grain growth was …

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Webgrain boundary complexions [6e8], with strain-to-failure values of 56% observed, representing an order of magnitude improvement. These authors created nanocrystalline samples with three complexion types: (1) clean grain boundaries (CGBs), (2) ordered grain boundary complexions (OGBCs), and (3) amorphous inter-granular films (AIFs). WebApr 22, 2024 · These findings advance our fundamental knowledge of grain boundary complexion (phase-like) transitions and electric field effects on microstructural stability … birmingham to gatlinburg drive time

Grain boundary complexions - University of Illinois …

WebJan 1, 2014 · Grain boundary complexion transitions are difficult to predict a priori and typically occur independently of bulk phase transformations, i.e. at different values of … WebGrain boundaries exhibit phase-like behavior in which their structure, chemistry and properties may change discontinuously at critical values of thermodynamic parameters … WebGrain boundary complexion transitions can lead to rapid changes in the macroscopic properties of polycrystalline metals and ceramics and are responsible for a variety of … birmingham to flowood ms