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Microstructural features and hydrogen diffusion in bcc FeCr alloys: a comparison between the Kelvin probe- and nanohardness based- methods
Jing Rao, Binhan Sun, Arulkumar Ganapathi +6
Hydrogen embrittlement can result in a sudden failure in metallic materials, which is particularly harmful in industrially relevant alloys, such as steels. A more comprehensive und…
Effect of the atomic structure of complexions on the active disconnection mode during shear-coupled grain boundary motion
Swetha Pemma, Rebecca Janisch, Gerhard Dehm +1
The migration of grain boundaries leads to grain growth in polycrystals and is one mechanism of grain-boundary-mediated plasticity, especially in nanocrystalline metals. This migra…
Interstitial segregation has the potential to mitigate liquid metal embrittlement in iron
Ali Ahmadian, Daniel Scheiber, Xuyang Zhou +6
The embrittlement of metallic alloys by liquid metals leads to catastrophic material failure and severely impacts their structural integrity. The weakening of grain boundaries by t…
Chemical Partitioning at Crystalline Defects in PtAu as a Pathway to Stabilize Electrocatalysts
Xuyang Zhou, Olga Kasian, Ting Luo +8
Dissolution of electrocatalysts during long-term and dynamic operation is a challenging problem in energy conversion and storage devices such as fuel cells and electrolyzers. To de…
Microstructure, grain boundary evolution and anisotropic Fe segregation in (0001) textured Ti thin films
Vivek Devulapalli, Marcus Hans, Prithiv T. Sukumar +3
The structure and chemistry of grain boundaries (GBs) are crucial in determining polycrystalline materials' properties. Faceting and solute segregation to minimize the GB energy is…
Dopant-segregation to grain boundaries controls electrical conductivity of n-type NbCo(Pt)Sn half-Heusler alloy mediating thermoelectric performance
Ting Luo, Federico Serrano-Sánchez, Hanna Bishara +12
Science-driven design of future thermoelectric materials requires a deep understanding of the fundamental relationships between microstructure and transport properties. Grain bound…