Inelastic deformation micromechanism and modified fragmentation model for silicon carbide under dynamic compression

Inelastic response of silicon to shock compression

The elastic and inelastic response of [001] oriented silicon to laser compression has been a topic of considerable discussion for well over a decade, yet there has been little progress in understanding the basic behaviour of this apparently simple material. We present experimental x-ray diffraction data showing complex elastic strain profiles in laser compressed samples on nanosecond timescales...

Micromechanism fabrication using silicon fusion bonding

Silicon fusion bonding is studied as an enabling technology for the fabrication of microrobotic mechanisms. The e!ects of both surface activation technique and annealing temperature on bond strength are considered using a crack-opening technique. As part of the study, the relationship between patterned silicon feature size and the resulting bond strength is explored. Based on the experimental r...

Atomistic simulation of rapid compression of fractured silicon carbide

Deformation mechanisms of a crack in silicon carbide under high-rate compression are investigated by molecular dynamics simulation. The penny-shaped crack is in tension throughout the simulation while a variable compression is applied in an in-plane direction. Two different mechanisms of crack-tip response are observed: (1) At low tension, a disordered band forms from the crack surface in the d...

Silicon Nitride and Silicon Carbide

Rate dependent deformation of a silicon nanowire under uniaxial compression: Yielding, buckling and constitutive description

0927-0256/$ see front matter Crown Copyright 2 doi:10.1016/j.commatsci.2011.07.037 ⇑ Corresponding author. Address: Mechanical Engin of Mechanical and Manufacturing Engineering, The Un NSW 2052, Australia. Tel.: +61 2 9385 6078; fax: +61 E-mail address: [email protected] (L.C. This paper investigates the effect of compressive strain rate on the mechanical behaviour of single crystallin...