VHCF properties and assessment of specimens and thin-walled component-like structures made of high-strength steel X5CrNiCuNb16-4

Florian Himmelbauer; Gerhard Winter; Florian Grün; Constantin Kiesling

doi:10.1016/j.ijfatigue.2021.106645

VHCF properties and assessment of specimens and thin-walled component-like structures made of high-strength steel X5CrNiCuNb16-4

Florian Himmelbauer, Gerhard Winter, Florian Grün, Constantin Kiesling

Lehrstuhl für Allgemeinen Maschinenbau (140)

LEC GmbH

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Begutachtung

Abstract

Determining the component strength from the material strength is an essential but difficult task in dimensioning. Therefore, extensive HCF and VHCF tests are carried out with specimens and thin-walled component-like structures made of X5CrNiCuNb16-4. Despite complex geometry and high-strength material, a local assessment concept of a design code is well applicable. Moreover, specimens and structures show similar VHCF properties, confirming the transferability. Large scatter in lifetime is mainly due to inclusions. Considering the stress intensity factor significantly reduces the scatter and thus enables a more reliable assessment. Furthermore, the area parameter model provides a conservative fatigue strength for 10 ⁷ cycles.

Originalsprache	Englisch
Aufsatznummer	106645
Seitenumfang	10
Fachzeitschrift	International Journal of Fatigue
Jahrgang	156.2022
Ausgabenummer	March
DOIs	https://doi.org/10.1016/j.ijfatigue.2021.106645
Publikationsstatus	Veröffentlicht - 19 Feb. 2022

Bibliographische Notiz

Funding Information:
The authors would like to acknowledge the financial support of the ?COMET - Competence Centres for Excellent Technologies? Programme of the Austrian Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technology (BMK) and the Federal Ministry for Digital and Economic Affairs (BMDW) and the Provinces of Styria, Tyrol and Vienna for the COMET Centre (K1) LEC EvoLET. The COMET Programme is managed by the Austrian Research Promotion Agency (FFG).

Funding Information:
The authors would like to acknowledge the financial support of the “COMET - Competence Centres for Excellent Technologies” Programme of the Austrian Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technology (BMK) and the Federal Ministry for Digital and Economic Affairs (BMDW) and the Provinces of Styria, Tyrol and Vienna for the COMET Centre (K1) LEC EvoLET. The COMET Programme is managed by the Austrian Research Promotion Agency (FFG) .

Publisher Copyright:
© 2021 The Authors

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abstract = "Determining the component strength from the material strength is an essential but difficult task in dimensioning. Therefore, extensive HCF and VHCF tests are carried out with specimens and thin-walled component-like structures made of X5CrNiCuNb16-4. Despite complex geometry and high-strength material, a local assessment concept of a design code is well applicable. Moreover, specimens and structures show similar VHCF properties, confirming the transferability. Large scatter in lifetime is mainly due to inclusions. Considering the stress intensity factor significantly reduces the scatter and thus enables a more reliable assessment. Furthermore, the area parameter model provides a conservative fatigue strength for 10 7 cycles. ",

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AU - Kiesling, Constantin

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