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Modeling of the mechanical behavior of nanostructured HSLA steels

Muszka, Krzysztof, Majta, Janusz and Hodgson, Peter 2007, Modeling of the mechanical behavior of nanostructured HSLA steels, ISIJ international, vol. 47, no. 8, pp. 1221-1227, doi: 10.2355/isijinternational.47.1221.

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Title Modeling of the mechanical behavior of nanostructured HSLA steels
Author(s) Muszka, Krzysztof
Majta, Janusz
Hodgson, Peter
Journal name ISIJ international
Volume number 47
Issue number 8
Start page 1221
End page 1227
Publisher Iron and Steel Institute of Japan
Place of publication Tokyo, Japan
Publication date 2007-05-29
ISSN 0915-1559
1347-5460
Keyword(s) ultra fine-grained steel
strengthening mechanisms
modified Khan–Huang–Liang model
mechanical properties
Summary In the present paper the basic strengthening mechanisms operating in microstructures are discussed with respect to their application in submicron/nano materials. This analysis focuses on these strengthening mechanisms in bcc microstructures, where the effect of grain boundaries is very strong. An experimental study of the influence of the thermomechanical history on the microstructure and dislocation substructure was performed using two different grades of HSLA steels. As a result, a modified version of the Khan–Huang–Liang flow stress model (KHL) was developed and is discussed in the light of results from the present study. Comparison with experimental results showed significant diversity in the refinement and mechanical responses of each steel, due to different activity of strengthening mechanisms and microalloying elements in the microstructure evolution process. The effect of mechanical and microstructural inhomogeneity in severe plastic deformation (SPD) on the deformation induced grain refinement and mechanical properties was also considered.
Language eng
DOI 10.2355/isijinternational.47.1221
Field of Research 091207 Metals and Alloy Materials
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2007, ISIJ
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007763

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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