Grain boundary strengthening
Endurecimiento del borde de grano
- Date
- 1951-1953 · confidence low
- Place
- Sheffield, England, United Kingdom
- Credited to
- Eric Ogilvie Hall y Norman James Petch
- Field
- Matter & energy
What was discovered
A method of strengthening materials by reducing crystallite (grain) size, since grain boundaries hinder the movement of dislocations; formulated by Eric Ogilvie Hall (1951) and Norman James Petch (1953), hence its alternative name, the Hall-Petch relation.
What it led to
- Theoretical basis for designing fine-grained steels and alloys
- Boost to grain-refinement techniques in metallurgy
- Starting point for the study of ultrafine-grained nanostructured materials