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Study of the effect of grain size on the dynamic mechanical properties of microalloyed steels

Muszka, K., Hodgson, P. D. and Majta, J. 2009, Study of the effect of grain size on the dynamic mechanical properties of microalloyed steels, Materials science and engineering A : structural materials: properties, microstructures and processing, vol. 500, no. 1 -2, pp. 25-33, doi: 10.1016/j.msea.2008.09.069.

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Title Study of the effect of grain size on the dynamic mechanical properties of microalloyed steels
Author(s) Muszka, K.
Hodgson, P. D.
Majta, J.
Journal name Materials science and engineering A : structural materials: properties, microstructures and processing
Volume number 500
Issue number 1 -2
Start page 25
End page 33
Total pages 9
Publisher Elsevier SA
Place of publication Lausanne, Switzerland
Publication date 2009-01-25
ISSN 0921-5093
1873-4936
Keyword(s) grain refinement
flow stress model
dynamic behavior
FEM
microalloyed steels
Summary In the present paper the effect of grain refinement on the dynamic response of ultra fine-grained (UFG) structures for C–Mn and HSLA steels is investigated. A physically based flow stress model (Khan-Huang-Liang, KHL) was used to predict the mechanical response of steel structures over a wide range of strain rates and grain sizes. However, the comparison was restricted to the bcc ferrite structures. In previous work [K. Muszka, P.D. Hodgson, J. Majta, A physical based modeling approach for the dynamic behavior of ultra fine-grained structures, J. Mater. Process. Technol. 177 (2006) 456–460] it was shown that the KHL model has better accuracy for structures with a higher level of refinement (below 1 μm) compared to other flow stress models (e.g. Zerrili-Armstrong model). In the present paper, simulation results using the KHL model were compared with experiments. To provide a wide range of the experimental data, a complex thermomechanical processing was applied. The mechanical behavior of the steels was examined utilizing quasi-static tension and dynamic compression tests. The application of the different deformation histories enabled to obtain complex microstructure evolution that was reflected in the level of ferrite refinement.
Language eng
DOI 10.1016/j.msea.2008.09.069
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
HERDC collection year 2009
Persistent URL http://hdl.handle.net/10536/DRO/DU:30022580

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