Proceedings of 41st Danubia-Adria Symposium Advances in Experimental Mechanics (pp. 75-78)
АУТОР(И) / AUTHOR(S): Dušan Arsić 
, Gordana Jovičić , Miroslav Živković , Miloš Pešić , Marko Topalović , Đorđe Ivković , Marko Delić
Download Full Pdf 
DOI: 10.46793/41DAS2025.075A
УВОД / INTRODUCTION:
The increasing demand for lightweight and reliable structural components and tools in manufacturing engineering creates a need for accurate data regarding the fatigue performance of high-strength and tool steels. This paper presents an experimental and comparative investigation of the fatigue behavior of STRENX 700, a high-strength structural steel, and 55NiCrMoV7, a thermally stable hot-work tool steel. Fatigue tests were conducted using a stress-controlled, fully reversed tension-compression loading regime (R = –1) on smooth “dog-bone” specimens. The resulting S–N curves were used to evaluate fatigue strength and determine the material parameters using Basquin’s relation. The results provide insight into the fatigue properties of these steels that have different industrial applications but are tested under the same conditions. The fatigue performance, advantages, and trade-offs of each steel grade are discussed.
КЉУЧНЕ РЕЧИ / KEYWORDS:
ПРОЈЕКАТ / ACKNOWLEDGEMENT:
This research was supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia, contract No. 451-03-66/2024-03/200378, and by the Science Fund of the Republic of Serbia, #GRANT No. 7475, Prediction of damage evolution in engineering structures – PROMINENT.
ЛИТЕРАТУРА / REFERENCES:
- Zhang, Z., Delagnes, D., & Bernhart, G. Cyclic behaviour and plastic strain memory effect of 55NiCrMoV7 steel under low cycle fatigue. Rare Met, 2011, 30, 443–446.
- Ulewicz, R., Szataniak, P., Novy, F., Trsko, L., Bokuvka, O. Fatigue Characteristics of Structural Steels in the Gigacycle Region of Loading. Mater Today Proc, 2017, 4, 5979–5984.
- Moverare, J., Lancaster, R.J., Jones, J., Stekovic, S., & Whittaker, M. T. A review of recent advances in the understanding of thermomechanical fatigue durability and failure mechanisms in nickel-based superalloys. Metall. Mater. Trans. A, 2025, 56, 1115–1134.
- Arsić, D., Djordjević, M., Zivković, J., Lazić, V., Sedmak, A., Aleksandrović, S., Rakić, D., Experimental-numerical study of tensile strength of the high-strength steel S690QL at elevated temperatures, Strength Mater, 2016, 48(5), 687–695.
- ASTM International. ASTM E466-21: Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials. West Conshohocken, PA, 2021.
- Milovanović, V., Arsić, D., Milutinović, M., Živković, M., Topalović, M. A comparison study of fatigue behavior of S355J2+N, S690QL and X37CrMoV5-1 steel. Metals, 2022, 12(7), 1199.
- Živković, J., Dunić, V., Milovanović, V., Pavlović, A., Živković, M. A modified phase-field damage model for metal plasticity at finite strains: Numerical development and experimental validation. Metals, 2021, 11(1), 47.
- ASTM International. ASTM E468-18: Standard Practice for Presentation of Constant Amplitude Fatigue Test Results for Metallic Materials. West Conshohocken, PA, 2018.
- ASTM International. ASTM E739-10(2015): Standard Practice for Statistical Analysis of Linear or Linearized Stress-Life (S-N) and Strain-Life (ε- N) Fatigue Data. West Conshohocken, PA, 2015.
- SSAB. Strenx® 700 Product Data Sheet. https://rockymountainsteel.com/wpcontent/ uploads/2023/04/Strenx-700.pdf Accessed July 29, 2025.