Experimental investigation on the fatigue and fracture properties of a fine pearlitic rail steel

Davide Leonetti; Bart Schotsman

doi:10.3221/IGF-ESIS.69.11

Experimental investigation on the fatigue and fracture properties of a fine pearlitic rail steel

Authors

Davide Leonetti Eindhoven University of Technology, The Netherlands https://orcid.org/0000-0002-7436-3977
Bart Schotsman Delft University of Technology, The Netherlands https://orcid.org/0000-0001-6174-2954

DOI:

https://doi.org/10.3221/IGF-ESIS.69.11

Keywords:

R350HT rail steel, Fatigue crack growth, rotating bending, fracture toughness

Abstract

This study reports an experimental investigation of the fatigue and fracture resistance of R350HT, a heat-treated pearlitic rail steel with refined microstructure used in rails. Monotonic tensile, rotating bending, linear elastic plane strain fracture toughness, and fatigue crack growth rate tests are presented. The results are used to outline the basic properties and are corroborated by fractographic investigation. This enables the identification of the dominant type of fracture. Regarding fatigue and fracture resistance, the investigated material shows similar properties as other pearlitic rail steels, such as R260. At room temperature, the dominating fracture is of brittle cleavage type, showing some ductile regions associated with pro-eutectoid.

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Published

27-04-2024

Issue

Vol. 18 No. 69 (2024): July 2024

Section

SI: IGF27 - 27th International Conference on Fracture and Structural Integrity

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

Open Access Statement

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How to Cite

Experimental investigation on the fatigue and fracture properties of a fine pearlitic rail steel. (2024). Frattura Ed Integrità Strutturale, 18(69), 142-153. https://doi.org/10.3221/IGF-ESIS.69.11