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Now showing items 1-4 of 4
Nucleation of amorphous shear bands at nanotwins in boron suboxide
(Nature Research, 2016)
The roles of grain boundaries and twin boundaries in mechanical properties are well understood for metals and alloys. However, for covalent solids, their roles in deformation response to applied stress are not established. ...
Grain Boundary Sliding and Amorphization are Responsible for the Reverse Hall-Petch Relation in Superhard Nanocrystalline Boron Carbide
The recent observation of the reverse Hall-Petch relation in nanocrystallinc ceramics offers a possible pathway to achieve enhanced ductility for traditional brittle ceramics via the nanosize effect, just as nanocrystalline ...
Atomic structure and mechanical response of coincident stacking faults in boron suboxide
(Materials Research Letters, 2019)
We report the atomic structure of coincident stacking faults (SFs) in superhard boron suboxide (B6O) by combining annular bright field scanning transmission electron microscopy and quantum mechanics (QM) simulations. ...
Grain boundary sliding and amorphization is responsible for the reverse Hall-Petch relation in superhard nanocrystalline boron carbide
(American Physical Society, 2018)
The recent observation of the reverse Hall-Petch relation in nanocrystalline ceramics offers a possible pathway to achieve enhanced ductility for traditional brittle ceramics via the nanosize effect, just as nanocrystalline ...