At what value of the index of strain rate sensitivity does the material behave superplastically?

1.0 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1.2

0.4 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.9

At what value of the index of strain rate sensitivity does the materia

1.	At what value of the index of strain rate sensitivity does the material behave superplastically?
A.	0
B.	0.2
C.	0.4 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.9
D.	1.0 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1.2
Answer» D. 1.0 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1.2