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This simulation illustrates the process of particle by-passing by the so-called Orowan bowing mechanism.
The Orowan stress required to force a dislocation past an obstacle is inversely proportional to the particle separtation, λ, as given by:
τOrowan = αμb / λ
Try changing the particle spacing using the slider bar, and record the Orowan Stress for each spacing.
Plot τOrowan as a function of λ.
Note, The Orowan bowing mechanisms results in the production of dislocation loops around the particles. As subsequent dislocations pass, dense tangles of dislocations form, leading to a high rate of work hardening.
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