56. Grain boundary strengthening and Hall-Petch Relation

This video deals with
1. Role of grain boundaries to resist dislocation motion
2. Dislocation pile up at boundaries
3. Model to explain Hall-Petch relation
4. Importance of friction stress and Hall-Petch coefficient
5. Utility of Hall-Petch equation
6. Inverse Hall-Petch relation
7. Critical value of grain size for retaining strength
8. Grain growth in nanograined materials even at ambient conditions

[@wowineedyou]

thank you! this video is really helpful, i wrote my final task about Hall-Petch relationship based on your video and got an excellent mark!

[@oriolatobi1132]

Thank you

[@nirajchawake]

Dear Oriola
Thanks and happy to help you.

[@mangeram2731]

Thanks sir

[@nirajchawake]

All the best