The n = 1 regime

A stress exponent value of 1 suggests the mechanism of creep to be Coble, N-H or H-D controlled. Recent studies have shown that the Spingarn-Nix
(S-N) mechanism with a stress exponent value of 1 could also be a viable creep mechanism.17 This mechanism could be identifiable through micro­structural evaluation following creep deformation revealing the limitation of only considering the creep parameters. In this section, the mechanism of Coble, N-H, H-D and S-N creep will be discussed.