New insight into the pit-to-crack transition from finite element analysis of the stress and strain distribution around a corrosion pit |
| |
Authors: | A Turnbull L Wright L Crocker |
| |
Affiliation: | National Physical Laboratory, Teddington, TW11 0LW, UK |
| |
Abstract: | A finite element (FE) analysis has been undertaken to evaluate the stress and strain distribution associated with a single corrosion pit in a cylindrical steel specimen stressed remotely in tension. A key observation was the localisation of plastic strain to the pit walls (just below the surface of the specimen). Simulation of a growing pit in a static stress field indicated corresponding plastic strain rates that were commensurate with values associated with stress corrosion cracking. This observation introduces a wholly new concept in understanding of the evolution of stress corrosion cracks from pits and correlates with recent X-ray tomography measurements. |
| |
Keywords: | A Steel B Modelling studies C Pitting corrosion C Stress corrosion cracking |
本文献已被 ScienceDirect 等数据库收录! |