Sentences with phrase «grain boundary structure»
Its application to a model system of symmetric tilt boundaries in Cu uncovers an unexpected rich polymorphism in the grain boundary structures.
https://www.unlv.edu/ Not exact matches
This somewhat surprising discovery enriches our fundamental knowledge of the atomic - level segregation structures at general grain boundaries, which are important in controlling a broad range of mechanical and physical properties of polycrystalline alloys.
Prior studies of atomic - level grain boundary and segregation structures have been mostly focused on small - angle or special symmetrical tilt and twist boundaries with high symmetries and well - defined periodicities in artificial bicrystals.
When a graphene lattice or sheet is formed, its polycrystalline structure has random boundaries between the single - crystal grains.
This surprising result relied on our use of scanning tunnelling microscopy which allowed us to measure for the first time the three - dimensional structure of grain boundaries, including the precise angles between adjacent grains.»
Moreover, we studied how vacancies and adding new atoms to the structure can affect this lattice thermal conductivity and, finally, we propose the use of grain boundaries as a strategy to reduce this conductivity, according to our analysis on this field.
«Understanding the three - dimensional structures of grain boundaries is a major challenge in materials science because they strongly influence the properties of materials,» Miao said.
HP: Radiation damage in a mineral distorts and expands its lattice structure, just as well - organized, tightly - stacked blocks take up more space after someone suddenly shakes them.77 Ramdohr explained how a slow expansion over many years would produce fractures along only grain boundaries and planes of weakness, but a sudden, explosive expansion would produce the fractures he observed.
BYU researchers said this paper is the first to attempt to crack the code of the atomic structures that heavily influence grain boundary properties with the computer algorithms of machine learning.