PPT Slide

• A plot of flow stress and strain rate gives a relationship of the form:

? ? = C (?)m ?,T

where m is the strain rate sensitivity and C is a constant, which is different from the Ludwik-Hollomon parameter

• A comparison of the flow stress of two materials at elevated temperature requires a correction for the effect of temperature on Elastic Modulus, i.e. use ratios of:

  ?
  
  E

2-1

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