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Neutron diffraction analysis of stress and strain partitioning in a two-phase microstructure with parallel-aligned phases

Huang, Q, Shi, R, Muránsky, O, Beladi, H, Kabra, S, Schimpf, C, Volkova, O, Biermann, H and Mola, J 2020, Neutron diffraction analysis of stress and strain partitioning in a two-phase microstructure with parallel-aligned phases, Scientific reports, vol. 10, no. 1, pp. 1-12, doi: 10.1038/s41598-020-70299-1.

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Title Neutron diffraction analysis of stress and strain partitioning in a two-phase microstructure with parallel-aligned phases
Author(s) Huang, Q
Shi, R
Muránsky, O
Beladi, HORCID iD for Beladi, H orcid.org/0000-0003-0131-707X
Kabra, S
Schimpf, C
Volkova, O
Biermann, H
Mola, J
Journal name Scientific reports
Volume number 10
Issue number 1
Article ID 13536
Start page 1
End page 12
Total pages 12
Publisher Springer Science and Business Media LLC
Place of publication Berlin, Germany
Publication date 2020-08-11
ISSN 2045-2322
2045-2322
Keyword(s) Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
Q-AND-P
MECHANICAL-PROPERTIES
STAINLESS-STEEL
FINITE-ELEMENT
AUSTENITE DECOMPOSITION
MARTENSITE
BEHAVIOR
DEFORMATION
ALLOYS
TRANSFORMATION
Summary By time-of-flight (TOF) neutron diffraction experiments, the influence of segregation-induced microstructure bands of austenite (γ) and martensite (α′ ) phases on the partitioning of stress and strain between these phases was investigated. Initially, tensile specimens of a Co-added stainless steel were heat treated by quenching and partitioning (Q&P) processing. Tensile specimens were subsequently loaded at 350 °C parallel to the length of the bands within the apparent elastic limit of the phase mixture. Lattice parameters in both axial and transverse directions were simultaneously measured for both phases. The observation of a lattice expansion for the γ phase in the transverse direction indicated a constraint on the free transverse straining of γ arising from the banded microstructure. The lateral contraction of α′ imposed an interphase tensile microstress in the transverse direction of the γ phase. The multiaxial stress state developed in the γ phase resulted in a large deviation from the level of plastic strain expected for uniaxial loading of single phase γ. Since segregation-induced banded microstructures commonly occur in many engineering alloys, the analysis of stress and strain partitioning with the present Q&P steel can be used to interpret the observations made for further engineering alloys with two-phase microstructures.
Language eng
DOI 10.1038/s41598-020-70299-1
Indigenous content off
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2020, The Author(s)
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30142063

Document type: Journal Article
Collections: Institute for Frontier Materials
Open Access Collection
GTP Research
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.