1. Ductile
Metals

3. The Suggested Ductile Model

4. Issues with it
• Moving all bonds at the same time requires a
lot of energy!
• This model predicts metals to be 1,000 times
stronger than we observe them to be

6. Dislocation theory…. why it’s better
• Moving one atom at a time requires far less
energy.
• The dislocation theory predicts the strength of
metals far better.