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Fatigue resistance of press hardened 22MnB5 steels
Eurecat, Centre Tecnològic de Catalunya, Manresa, Spain.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials. Eurecat, Centre Tecnològic de Catalunya, Manresa, Spain.
Eurecat, Centre Tecnològic de Catalunya, Manresa, Spain.
Eurecat, Centre Tecnològic de Catalunya, Manresa, Spain.
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2020 (English)In: International Journal of Fatigue, ISSN 0142-1123, E-ISSN 1879-3452, Vol. 130, article id 105262Article in journal (Refereed) Published
Abstract [en]

In press hardened steels, fatigue behaviour is very sensitive to surface defects or irregularities, either intrinsic or introduced during trimming operations. This work addresses the understanding and prediction of fatigue resistance of press hardened steels from a fracture mechanics approach. The size of fatigue originating defects were evaluated and used to estimate the fatigue limit for different surface conditions (coated and uncoated), different coatings (Al-Si and Zn) and different edge condition (polished and mechanically trimmed). Good agreement was found between calculated and experimental values, which shows the potential of fracture mechanics to estimate the fatigue performance of press hardened steels.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 130, article id 105262
Keywords [en]
Press hardening, Edge damage, Fracture mechanics
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-75945DOI: 10.1016/j.ijfatigue.2019.105262Scopus ID: 2-s2.0-85072299111OAI: oai:DiVA.org:ltu-75945DiVA, id: diva2:1350021
Note

Validerad;2019;Nivå 2;2019-10-02 (johcin)

Available from: 2019-09-10 Created: 2019-09-10 Last updated: 2019-10-02Bibliographically approved

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Casellas, Daniel

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