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Torsion of a rectangular bar: Complex phase distribution in 304L steel revealed by neutron tomography
Helmholtz Zentrum Berlin Mat & Energie GmbH, Hahn Meitner Pl 1, D-14109 Berlin, Germany.;Tech Univ Berlin, Str 17 Juni 135, D-10623 Berlin, Germany.;Thuyloi Univ, 175 Tay Son, Hanoi, Vietnam..ORCID-id: 0000-0003-0970-8470
European Spallat Source ESS ERIC, SE-22100 Lund, Sweden..
Helmholtz Zentrum Berlin Mat & Energie GmbH, Hahn Meitner Pl 1, D-14109 Berlin, Germany..
Helmholtz Zentrum Berlin Mat & Energie GmbH, Hahn Meitner Pl 1, D-14109 Berlin, Germany.;Bundesanstalt Mat Forsch & Prufung, Unter Eichen 87, D-12205 Berlin, Germany..
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2022 (Engelska)Ingår i: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 222, artikel-id 111037Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Metastable austenitic stainless steel (304L) samples with a rectangular cross-section were plastically deformed in torsion during which they experienced multiaxial stresses that led to a complex martensitic phase distribution owing to the transformation induced plasticity effect. A three-dimensional character-ization of the phase distributions in these cm-sized samples was carried out by wavelength-selective neutron tomography. It was found that quantitatively correct results are obtained as long as the samples do not exhibit any considerable preferential grain orientation. Optical microscopy, electron backscatter diffraction, and finite element modeling were used to verify and explain the results obtained by neutron tomography. Altogether, neutron tomography was shown to extend the range of microstructure charac-terization methods towards the meso-and macroscale.

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Elsevier BV , 2022. Vol. 222, artikel-id 111037
Nyckelord [en]
Neutron tomography, Phase distribution, Rectangular cross-section, Torsion, Geometrical effect
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URN: urn:nbn:se:kth:diva-320481DOI: 10.1016/j.matdes.2022.111037ISI: 000862773300004Scopus ID: 2-s2.0-85135925542OAI: oai:DiVA.org:kth-320481DiVA, id: diva2:1706364
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QC 20221026

Tillgänglig från: 2022-10-26 Skapad: 2022-10-26 Senast uppdaterad: 2022-10-26Bibliografiskt granskad

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Dahlberg, Carl F. O.

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