Creep Rate Calculator

Estimate steady-state creep rate using the Arrhenius-type power law for high-temperature material deformation.

MPa
K
kJ/mol

Steady-State Creep Rate

4,743.353 1/s

Steady-State Creep Rate vs Applied Stress (sigma)

Vedi formula →

Formula

## Steady-State Creep Rate Creep is the slow, time-dependent deformation of materials under sustained load at elevated temperatures. The secondary (steady-state) creep rate follows a power-law Arrhenius equation. ### Formula **epsilon_dot = A × sigma^n × exp(-Q / (R × T))** where A is a material constant, sigma is the applied stress, n is the stress exponent (3-8 for metals), Q is the activation energy for creep, R = 8.314 J/(mol·K) is the gas constant, and T is absolute temperature.

Esempio Risolto

A nickel alloy at 800 K under 100 MPa (A=1e10, n=5, Q=250 kJ/mol).

  1. 01sigma^n = 100^5 = 1 × 10^10
  2. 02Q/(RT) = 250000 / (8.314 × 800) = 37.57
  3. 03exp(-37.57) = 4.83 × 10^-17
  4. 04Creep rate = 1e10 × 1e10 × 4.83e-17 = 4.83 × 10^3 s^-1 ... (values depend on actual A)