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 …

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 …

Boron carbide is one of the hardest materials in the world which can be synthesized by
various methods. The most common one is a carbothermic or magnesiothermic reduction of …

Boron carbide (B4C) is a superhard material, whose wide engineering applications are
limited by its brittleness under impact. Doping various impurity elements into B4C may lead …

A novel pathway for the magnesiothermic reduction of boron oxide and magnesium
dodecaboride (MgB12) in the presence of carbon by a self-propagating high-temperature …

It has been found that the addition of Ti can improve the strength of Cu-Al-Mn alloys and
adjust their mechanical properties. However, the internal mechanism has not been fully …

Le carbure de bore (BxC), est une céramique semiconductrice aux propriétés électroniques
(gap, mobilités des porteurs…) encore mal connues en raison des difficultés pour l'élaborer …