A Lüder band is a localized band of plastic deformation that can occur on some materials before fracture.

These bands can arise from residual stresses due to welding.

Lüder bands often are a result of strain aging by discontinuous yielding and can be commercially important for producing wrinkled lined finishes.

It happens on low carbon steels and some Al-Mg Alloys.

[edit] References

• Richard W. Hertzberg, Deformation and Fracture Mechanics of Engineering Materials, 4th Edition, pp. 29–30 ISBN 0471012149

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