We present the experimental-numerical analysis of the influence of temperature on mechanical properties of structural high-strength steel class S690QL. Since the steel S690QL belongs to a group of steels with good mechanical properties, the aim of this paper is to determine the highest temperatures at which these good characteristics are kept. Experimental tensile testings of the specimens were performed at five different temperatures in the range from 20 to 550°C. Beside experimental testing, strengthening curves were calculated and numerical analysis using finite element method was performed. Both the experimental and numerical results have shown that decrease of mecahanical properties occurs at approximately 450°C.
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This research was financed by the Ministry of Education, Science and Technological development of Republic of Serbia through Project TR35024. The authors are very grateful for this funding.
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Translated from Problemy Prochnosti, No. 5, pp. 118 – 128, September – October, 2016.
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Arsić, D., Djordjević, M., Zivković, J. et al. Experimental-Numerical Study of Tensile Strength of the High-Strength Steel S690QL at Elevated Temperatures. Strength Mater 48, 687–695 (2016). https://doi.org/10.1007/s11223-016-9812-x
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DOI: https://doi.org/10.1007/s11223-016-9812-x