Strain partitioning in dual-phase steels containing tempered martensite

Han, Qihang, Asgari, Alireza, Hodgson, Peter D and Stanford, Nicole 2014, Strain partitioning in dual-phase steels containing tempered martensite, Materials science and engineering A, vol. 611, pp. 90-99, doi: 10.1016/j.msea.2014.05.078.

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Title Strain partitioning in dual-phase steels containing tempered martensite
Author(s) Han, Qihang
Asgari, Alireza
Hodgson, Peter D
Stanford, Nicole
Journal name Materials science and engineering A
Volume number 611
Start page 90
End page 99
Total pages 10
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2014
ISSN 0921-5093
Keyword(s) Dual phase steel
Finite element model
Mechanical properties
Strain partitioning
Science & Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Science & Technology - Other Topics
Materials Science
Summary Tempering has been used as a method to develop a range of dual phase steels with the same martensite morphology and volume fraction, but containing phases with different relative strengths. These steels were used to examine the strain partitioning between the two constituent phases experimentally through mechanical testing and numerically through finite element modelling. It was found that increasing the differential in strength between the two phases not only produces regions of high strain, but also regions of low strain. On average, a larger difference in strength between the phases increased the strain carried by the softer phase. There was no discernible preferential strain localisation to the ferrite/martensite interface, with the regions of strain localisation being determined by the morphology of the microstructure. A direct correlation between the average strain in the ferrite, and the measured ductility has been found. © 2014 Elsevier B.V.
Language eng
DOI 10.1016/j.msea.2014.05.078
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
Copyright notice ©2014, Elsevier
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