9 papers · 1 filter
Role of defects in the thermodynamic stability of grain boundary phases at asymmetric tilt boundaries in copper
Swetha Pemma, Lena Langenohl, Saba Saood +5
Grain boundaries can exist as different grain boundary phases (also called complexions) with individual atomic structures. The thermodynamics of these defect phases in high-angle g…
Vacuum Dealloyed Brass as Li-Metal Battery Current Collector: Effect of Zinc and Porosity
Eric V Woods, Xinren Chen, Shaolou Wei +19
"Anode-free" lithium-metal batteries promise significantly higher energy density than conventional graphite-based lithium-ion batteries; however, lithium dendrite growth can lead t…
Secondary Grain Boundary Dislocations Alter Segregation Energy Spectra
Xinren Chen, William Gonçalves, Yi Hu +9
Grain boundaries (GBs) trigger structure-specific chemical segregation of solute atoms. According to the three-dimensional (3D) topology of grains, GBs - although defined as planar…
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…
Thermal modification of ZrCu metallic glass nanolaminates: Structure and mechanical properties
Andrea Brognara, Chanwon Jung, Cristiano Poltronieri +4
The effects of thermal treatments on metallic glass nanolaminates (NLs), with a composition of ZrCu and ZrCu and a bilayer period of 50 nm, were explore…
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…