1 research outputs found
Microscale Fracture Behavior of Single Crystal Silicon Beams at Elevated Temperatures
The micromechanical
fracture behavior of Si [100] was investigated as a function of temperature
in the scanning electron microscope with a nanoindenter. A gradual
increase in <i>K</i><sub>C</sub> was observed with temperature,
in contrast to sharp transitions reported earlier for macro-Si. A
transition in cracking mechanism via crack branching occurs at ∼300
°C accompanied by multiple load drops. This reveals that onset
of small-scale plasticity plays an important role in the brittle-to-ductile
transition of miniaturized Si