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Average grain diameter at 310MPa from 2 known yield/grain values

  • #1

Homework Statement


The lower yield point for an iron that has an average grain diameter of 1e-2mm is 230MPa. At a grain diameter of 6e-3mm, the yield point increases to 275MPa. At what grain diameter will the lower yield point be 310MPa?


Homework Equations


Not sure


The Attempt at a Solution


Not sure how to do it.
 

Answers and Replies

  • #2
Mapes
Science Advisor
Homework Helper
Gold Member
2,593
20
Look up "Hall-Petch."
 
  • #3
Thanks Mapes
 

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