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On the development of grain-orientation-dependent and inter-phase stresses in a super duplex stainless steel under uniaxial loading
Linköping University, The Institute of Technology. Linköping University, Department of Management and Engineering, Engineering Materials .
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2006 (English)In: Materials Science Forum, ISSN 0255-5476, E-ISSN 1662-9752, Vol. 524-525, 917-922 p.Article in journal (Refereed) Published
Abstract [en]

Microstresses due to intergranular and inter-phase interactions in an austenitic-ferritic super duplex steel (SAF 2507) under uniaxial compressive deformation have been studied by in-situ neutron diffraction experiments. Lattice strains of several hkl planes of austenite respective ferrite were mapped as a function of sample direction at a number of load levels during loading into the plastic regime and unloading. The analysis of the experimental results has shown that during loading both grain-orientation-dependent and inter-phase stresses were generated under plastic deformation that was inhomogeneous at the microstructural level. Residual stresses depending on the grain-orientation and phase have been found after unloading. The results also indicate stronger intergranular interactions among the studied hkl planes of austenite than those of ferrite.

Place, publisher, year, edition, pages
2006. Vol. 524-525, 917-922 p.
Keyword [en]
duplex stainless steel, lattice strains, in-situ loading, neutron diffraction, grain-orientation-dependent stresses, inter-phase stresses
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-48063OAI: oai:DiVA.org:liu-48063DiVA: diva2:268959
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Peng, RuJohansson, Sten

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