A bar of an alloy is loaded in tension at elevated temperature, so that time-dep

Question

A bar of an alloy is loaded in tension at elevated temperature, so that time-dependent (creep) deformation occurs. Some creep data for this alloy at 200 C is given in the table:
Steady state creep rate (hr-1) stress (MPa)
2.5 x 10-3 55
2.4 x 10-2 69


Calculate the steady-state creep rate (in hr-1) if the bar has a tensile stress of (4.6x10^1) MPa at (2.45x10^2) oC. Assume that the activation energy for creep is 140 kJ/mol.

Express your answer in the form X.X x 10^Y.
Note: Your answer is assumed to be reduced to the highest power possible.

Explanation / Answer

GIVEN T=200

AS YOU KNOW THERE IS THE ONLY ONE EQUATION IN CREEP TYPE OF PROBLEMS
SO YOU GAVE EVERYTHING PUTTING IN WE GET
CREEP RATE AS 4.5*10-4

i DID A MISTAKE EARLIER

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