A shaft (r = 12 mm) made of pure iron (E = 190GPa, v = 0.29) is loaded at T = 900 C with a constant axial force F = 3500 N. Which creep mechanism will be predominant? Normalised stress o/G 1 10-1 Theoretical shear strength 10-2 Sliding of dislocations 10-3 104 Climbing of dislocations Diffusion creep 10-5 10-6 Elastic behaviour 10-7 10-8 0 1 2 3 4 5 Coble Nabarro- Herring 9 10 Homologous temperature (x 10') T/Tm Selected Answer: Coble creep Answers: Nabarro-Herring creep Climbing of dislocations Coble creep No creep will occur