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Fracture Toughness of High-Strength Steels Within the Temperature Range of Ductile-to-Cleavage Transition. Master Curves

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The fracture toughness of high-strength ferritic steels within the temperature range of ductile-tocleavage transition is analyzed. We tested two steels: S960QC and Hardox-400. The experimental results are compared with the results obtained by using the standard Master Curve (MC) equation. It turns out that the MC equation can be adopted to predict the fracture toughness of the high-strength steels after certain modifications. The shape of the formula can be preserved but some coefficients should be changed. The relationship between the fracture toughness and the thickness of an element included in the MC formula does not exist in the case of high-strength steels. One formula cannot be proposed for the MC of the tested steels, in contrast to the steels with a yield stress below 825 MPa.

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Acknowledgements

Financial support from the Polish Ministry of Science and Higher Education under Contract No. 2014/15/B/ST8/00205 is gratefully acknowledged.

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  1. Kielce University of Technology, Kielce, Poland

    A. Neimitz & І. R. Dzioba

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  1. A. Neimitz
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  2. І. R. Dzioba
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Correspondence to І. R. Dzioba.

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Published in Fizyko-Khimichna Mekhanika Materialiv, Vol. 53, No. 2, pp. 16–23, March–April, 2017.

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Neimitz, A., Dzioba, І.R. Fracture Toughness of High-Strength Steels Within the Temperature Range of Ductile-to-Cleavage Transition. Master Curves. Mater Sci 53, 141–150 (2017). https://doi.org/10.1007/s11003-017-0055-1

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  • DOI: https://doi.org/10.1007/s11003-017-0055-1

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