On the Activation Energy in the Chemical-Mechanical Correlation Model

Abstract

The assumption that the Q c in the chemical-mechanical correlation model is the creep activation energy was verified. Verification was carried out by deriving values of Q c from stress corrosion cracking (SCC) for various materials and comparing these values with creep activation energies (Q creep ) obtained from creep tests and reported in the literature. Materials investigated included austenitic stainless steels (SS), nickel alloys, copper alloys, aluminum alloy, and silver chloride polycrystalline. Results showed a match between Q c and Q creep for the materials investigated.

Some fundamental aspects of thermally activated processes involved in stress corrosion cracking in high temperature aqueous environments

“…The complexity of the analysis of the effect of temperature on physicochemical processes has been discussed by Santarini [9]. There were some analyses of the thermal activation of SCC [3,10] or chemical-mechanical systems [11]. The effects of temperature on SCC growth of several typical austenitic alloys in simulated LWR environments are presented.…”