Materials respond to shock in many ways such as plastic flow in metals and amorphization
in ceramics. It is very challenging to characterize the deformation mechanisms of ceramics …

Dislocation glide, deformation twinning, and phase transition are critical mechanisms
resulting in irreversible plastic deformations of materials. Because of the lack of dislocation …

Abstract The Hall-Petch and inverse Hall-Petch behaviors in nanocrystalline ceramics are
not well understood because dislocation activities, which are important in metals, are usually …

Boron-rich carbides with icosahedral cages as pivotal structural units, which exhibit high
hardness and low density, have promising industrial applications. However, the insufficient …

Superhard materials typically exhibit limited plastic deformation due to their strong covalent
and ionic bonding. Identifying the deformation mechanisms is crucial to enhance their …

Nanotwinned metals exhibit enhanced strength due to the twin-boundary-dislocation
interaction, but nanotwins may play a different role in strong, yet brittle ceramics due to the …

The densification process of sintered alumina is mainly controlled by surface, lattice, and
interface diffusion, and many experimental researches show that heating rate can affect the …

Boron-rich compounds have attracted much attention due to their interesting structures and
excellent properties. Here, we performed an extensive study on the different B–P …

The shear‐induced amorphization has been observed in many strong ceramics and is
responsible for their cracking and fragmentation. But its underlying mechanism remains …

ABSTRACT A phase field theory for crystalline solids accounting for thermoelasticity,
fracture, twinning, and limited slip is presented. Residual stresses are incorporated via …