Towards Understanding the Effect of Deformation Mode on Stress Corrosion Cracking Susceptibility of Grade 2205 Duplex Stainless Steel

Cem Ornek, Dirk Engelberg

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The effect of bending, rolling, and tensile deformation on stress and strain development in grade 2205 duplex stainless steel has been investigated using x-ray diffraction (XRD) and electron backscatter diffraction (EBSD) analyses. The deformed microstructures were assessed for their stress corrosion cracking (SCC) susceptibility, with highest microstructure propensity observed after bending deformation. Strain localisation occurred in the austenite, independent of applied deformation mode. Cold rolling and bending also resulted in stress development in the austenite, with the ferrite also indicating significantly increased stresses after tensile straining. The austenite phase became more susceptible towards stress corrosion cracking, whereas the ferrite seemed to be more prone towards selective dissolution. Rolling deformation enhanced the propensity to localised corrosion.
    Original languageEnglish
    Pages (from-to)269-279
    Number of pages11
    JournalMaterials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing
    Volume666
    Early online date22 Apr 2016
    DOIs
    Publication statusPublished - 1 Jun 2016

    Keywords

    • Duplex Stainless steel; Atmospheric Corrosion; Stress Corrosion Cracking; Electron Backscatter Diffraction (EBSD); X-ray Diffraction (XRD); Scanning Electron Microscopy (SEM)

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