Stacking-fault energy

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The stacking-fault energy (SFE) is a material property on a very small scale. It is noted as γSFE in units of joules per square meter.

The SFE modifies the ability of a dislocation in a crystal to glide onto an intersecting slip plane. When the SFE is low, the mobility of dislocations in a material decreases.

The SFE for magnesium is relatively high, and has a value of 125 mJ m-2 [1].

[edit] References

  1. ^  N.V. Ravi Kumar et al., Grain refinement in AZ91 magnesium alloy during thermomechanical processing, Materials and Engineering A359 (2003), 150-157


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