New mechanism of stress corrosion cracking: fracto-surface mobility mechanism

Author(s): Javier Sanchez, E. Torres, Nuria Rebolledo, Alvaro Ridruejo
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures
Editor(s): Ana Baričević, Marija Jelčić Rukavina, Domagoj Damjanović, Maurizio Guadagnini
ISBN: 978-2-35158-217-6
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 286-291
Total Pages: 813
Language: English

Abstract: The mechanism of stress corrosion cracking on steels has yet to be fully understood. It is a surface process that implies a corrosion and stress synergy, but the most practical consequence is that stress corrosion cracking can modify the mechanical characteristics of the metal causing
brittle failure.
The mechanism proposed in this article merges the surface mobility mechanism proposed by Galvele and the fracture mechanics principles. Also, a model of stress corrosion cracking is proposed where the source of vacancies is by anodic dissolution, and the vacancies are driven by a stress gradient to the crack tip under non-stationary conditions. The mechanism is denominated the fracto-surface mobility mechanism (FSMM).

Online publication :2019
Publication type : full_text
Public price (Euros) : 00