Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5439942 | Corrosion Science | 2017 | 11 Pages |
â¢Different dislocation types and densities were observed beneath pre-crack dimples and SCC facets due to absorbed hydrogen.â¢The absorbed hydrogen diffusion probably proceeds by pipe diffusion through the planar slip bands ahead of the SCC crack tip.â¢Absorption Induced Dislocation Emission and Hydrogen Enhanced Localized Plasticity are the SCC mechanism for α + β Ti alloys.
In a previous paper (Cao et al., 2017) [1], a transition in fracture mode in aqueous NaCl Stress-Corrosion Cracking (SCC) of Ti-8Al-1Mo-1Â V was reported. This paper attempts to unravel the operating mechanism for SCC by dislocation analysis on the Focus Ion Beam (FIB) lift-out foils from pre-crack and the SCC regions. It is shown that both basal and