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Noncommercial-Share Alike 2.0 Licence UK: England & Wales

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d/b: 1.414 /Å

G: 46.2 GPa

ν: 0.3

w/b: 0.79

Select a material to see the plot:

The experimental value of iron for the Peierls stress is 112.5 MPa

The stress at the graph maximum (Peierls stress) is 51 MPa

The stress using \({\tau _P} = 2\pi \frac{{\Delta {U}}}{{{b^2}}}\) is 54 MPa

According to the Peierls Nabarro model, the maximum stress is \( {\tau _P} = \;3G ( - 2\pi \frac{w}{b}) \) = 5 GPa

Or in the simplified version, assuming w=b, the maximum stress is G/180 = 361 MPa