Increasing strain rate tends to have which one of the following effects on flow stress during hot forming of metal:
A)decreases flow stress
B)has no effect
C)increases flow stress

Question

Quizplus · Accepted Answer

Increasing the strain rate during hot forming of metal typically increases the flow stress. This is because at higher strain rates, there is less time for the material to undergo atomic or dislocation movements, making it harder to deform.

Increasing Strain Rate Tends to Have Which One of the Following