01:29:06 Time Remaining < Return Submit 11 = Bo" exp 2 points The average creep strain rate in the steady-state regime c

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01 29 06 Time Remaining Return Submit 11 Bo Exp 2 Points The Average Creep Strain Rate In The Steady State Regime C 1 (35.3 KiB) Viewed 8 times

01:29:06 Time Remaining < Return Submit 11 = Bo" exp 2 points The average creep strain rate in the steady-state regime can be expressed as de Q dt RT where, t, Bo, Q. T and Rare strain, time, constant, stress, creep activation energy, temperature and gas constant of 8,314) mor 1. respectively. The creep strain rate measured at 2200 °C and stress of 3 MPa is 1 x 107s Increasing the stress level to 7 MPa whilst maintaining the condition at the identical temperature, the strain rate now is 1 x 10451. Determine the stress exponent n. The creep activation energy is assumed to be identical for both stress levels, 5.5 8.2 -5.5 -2.4 none of the options is correct 12 2 points In a close packed structure, the vacancy migrates without any activation energy