Investigating the Anisotropic Behaviour of Lean Duplex Stainless Steel 2101
The quasi-static mechanical response of hot rolled lean duplex stainless steel 2101 (LDSS 2101) in rolling, transverse and normal directions under compression loading has been investigated for its perceived anisotropic behaviour. Microstructural characterization is performed by optical microscopy and Electron Back Scatter Diffraction (EBSD) to qualitatively define the influence of the texture by using Taylor factor and grain sizes, and phase boundaries by utilizing the modified Hall-Petch formula. It was observed that LDSS2101 does not show anisotropic behaviour in terms of the mechanical strength but it has a clear anisotropy in the lateral strains; the microstructural explanation of this response may result from the phase boundaries strengthening.
KeywordsLDSS2101 Anisotropy Microstructure Compression
The authors would like to thank Dr. Frank Brink and Dr. Hua Chen in the Centre for Advanced Microscopy at the Australian National University in conducting some of EBSD scans.
- 1.Outokumpo (2016) Stainless steel alloy surcharges Europe. [Online]. Available: http://www.outokumpu.com/en/pricing-aaf/stainless-steel-alloy-surcharges/Pages/default.aspx
- 2.Liljas M, Johansson P, Liu HP, Olsson COA (2008) Development of a lean duplex stainless steel. Steel Res Int 79(6):466–473Google Scholar
- 13.ASTM A 240/A 240 M—04a (2004) Standard specification for chromium and chromium-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications. Standards iGoogle Scholar
- 14.Standard test method for plastic strain ratio r for sheet metal (2010) ASTM E517Google Scholar
- 16.Fan Z, Tsakiropoulos P, Smith PA, Miodownik AP (1993) Extension of the Hall-Petch relation to two-ductile-phase alloys. Philos Mag A 67(2):515–531Google Scholar