Characteristics of Stress Index in Steady State Creep Equation
Details
The linear relation on the semi-log plane between the log k and stress index n in Norton equation d ε/dt=kσ^n was recognized for residual compressive stress relaxation behavior of an induction hardened steel. This linear relation k=BA^n (A,B: experimental constants) could be expected also in high temperature creep phenomena. Investigating many references in latest two decades, this study widely verified the stress index n relation for various kinds of materials of ferrous metals, nonferrous metals, and ceramics ad also for compressive creep behavior.
