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Load partitioning between single bulk grains in a two-phase duplex stainless steel during tensile loading
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-1102-4342
Yonsei University, Seoul.
Argonne National Laboratory, Argonne, IL.
Argonne National Laboratory, Argonne, IL.
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2010 (English)In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 58, no 2, p. 734-744Article in journal (Refereed) Published
Abstract [en]

The lattice strain tensor evolution for single bulk grains of austenite and ferrite in a duplex stainless steel during tensile loading to 0.02 applied strain has been investigated using in situ high-energy X-ray measurements and finite-element modeling. Single-grain X-ray diffraction lattice strain data for the eight austenite and seven ferrite grains measured show a large variation of residual lattice strains, which evolves upon deformation to the point where some grains with comparable crystallographic orientations have lattice strains different by 1.5 × 10-3, corresponding to a stress of ≈300 MPa. The finite-element simulations of the 15 measured grains in three different spatial arrangements confirmed the complex deformation constraint and importance of local grain environment.

Place, publisher, year, edition, pages
2010. Vol. 58, no 2, p. 734-744
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-4403DOI: 10.1016/j.actamat.2009.09.053ISI: 000272917000041Scopus ID: 2-s2.0-70449487414Local ID: 259d7510-bf18-11de-b769-000ea68e967bOAI: oai:DiVA.org:ltu-4403DiVA, id: diva2:977276
Note
Validerad; 2010; 20091022 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Hedström, PeterOdén, Magnus

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