TY - JOUR
T1 - VHCF properties and assessment of specimens and thin-walled component-like structures made of high-strength steel X5CrNiCuNb16-4
AU - Himmelbauer, Florian
AU - Winter, Gerhard
AU - Grün, Florian
AU - Kiesling, Constantin
N1 - Publisher Copyright:
© 2021 The Authors
PY - 2022/3
Y1 - 2022/3
N2 - 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 107 cycles.
AB - 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 107 cycles.
KW - Component testing
KW - Fatigue strength
KW - Inclusions
KW - Life prediction
KW - Very high cycle fatigue
UR - http://www.scopus.com/inward/record.url?scp=85119912246&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2021.106645
DO - 10.1016/j.ijfatigue.2021.106645
M3 - Article
AN - SCOPUS:85119912246
SN - 0142-1123
VL - 156
JO - International Journal of Fatigue
JF - International Journal of Fatigue
M1 - 106645
ER -