Grain Boundary Engineering and Nanocrystalline Alloy Mechanics
This community investigates the atomic structure and behavior of grain boundaries in metals and ceramics to control mechanical strength, electrical conductivity, and thermal stability.
The research focuses on manipulating grain boundary character, segregation, and migration in materials such as tungsten carbide, stainless steel, and nanocrystalline copper. Key methods include molecular dynamics simulations, plasma sintering, and in-situ electron microscopy to study how boundary structures influence plastic deformation, creep resistance, and diffusion. Specific applications include enhancing the strength-conductivity synergy in copper foils for electronics, stabilizing grain boundaries in high-temperature alloys, and optimizing the microstructure of cemented carbides for industrial cutting tools. The work bridges fundamental atomic-scale physics with the engineering of bulk material properties.
The community is most prominent in research tracked for Tungsten, representing 1.6% of that element's total literature, and Copper, accounting for 0.9% of its research. It also holds a significant share of Nickel research at 0.8%.
The group comprises 24,430 papers, with the highest publication volume in Acta Materialia, Acta Metallurgica, and the International Journal of Refractory Metals and Hard Materials.
Recent work continues to focus on quantifying deformation mechanisms in small-grained metals, optimizing copper-copper hybrid bonding for 3D integration, and understanding how grain boundary wetting and segregation affect the mechanical performance of polycrystals.