Detail publikačního výsledku

Very High Cycle Fatigue Behavior of Austenitic Stainless Steel in Annealed and Predeformed Condition

SARKAR, A.; KLUSÁK, J.; KOZÁKOVÁ, K.; CHRIST, H.-J.

Originální název

Very High Cycle Fatigue Behavior of Austenitic Stainless Steel in Annealed and Predeformed Condition

Anglický název

Very High Cycle Fatigue Behavior of Austenitic Stainless Steel in Annealed and Predeformed Condition

Druh

Článek WoS

Originální abstrakt

Engineering components in service nowadays are designed for a large number of loading cycles (similar to 109), which makes fatigue behavior in this cycle range (designated as very high cycle fatigue [VHCF]) a topic of significant interest. The present study aims to investigate the high cycle fatigue (HCF) and VHCF behavior in type 304 stainless steel in two different conditions (annealed and with a martensite volume fraction of similar to 45 %) through low cycle fatigue predeformation at a subzero temperature. A fatigue diagram in the form of an S-N curve extending up to the VHCF range is generated, which shows different HCF and VHCF behaviors for the annealed and predeformed conditions. Further tests are carried out at different R ratios to generate constant-life Haigh diagrams for both conditions. Although no failure is observed in the VHCF range under the annealed condition, an internal crack initiation mode is observed under the predeformed condition (Type II behavior), which is attributed to the enhanced notch sensitivity under VHCF cycling induced by a significant extent of strain-induced martensite formed during predeformation. To address the influence of varying load history under service, specimens were prefatigued in HCF, followed by VHCF cycling. The HCF-VHCF boundary is found to be significantly impacted by the prior HCF damage, with lowering of the fatigue limit under VHCF.

Anglický abstrakt

Engineering components in service nowadays are designed for a large number of loading cycles (similar to 109), which makes fatigue behavior in this cycle range (designated as very high cycle fatigue [VHCF]) a topic of significant interest. The present study aims to investigate the high cycle fatigue (HCF) and VHCF behavior in type 304 stainless steel in two different conditions (annealed and with a martensite volume fraction of similar to 45 %) through low cycle fatigue predeformation at a subzero temperature. A fatigue diagram in the form of an S-N curve extending up to the VHCF range is generated, which shows different HCF and VHCF behaviors for the annealed and predeformed conditions. Further tests are carried out at different R ratios to generate constant-life Haigh diagrams for both conditions. Although no failure is observed in the VHCF range under the annealed condition, an internal crack initiation mode is observed under the predeformed condition (Type II behavior), which is attributed to the enhanced notch sensitivity under VHCF cycling induced by a significant extent of strain-induced martensite formed during predeformation. To address the influence of varying load history under service, specimens were prefatigued in HCF, followed by VHCF cycling. The HCF-VHCF boundary is found to be significantly impacted by the prior HCF damage, with lowering of the fatigue limit under VHCF.

Klíčová slova

high cycle fatigue; very high cycle fatigue; S-N curve; metastability; austenitic stainless steel

Klíčová slova v angličtině

high cycle fatigue; very high cycle fatigue; S-N curve; metastability; austenitic stainless steel

Autoři

SARKAR, A.; KLUSÁK, J.; KOZÁKOVÁ, K.; CHRIST, H.-J.

Rok RIV

2024

Vydáno

09.02.2023

Nakladatel

AMER SOC TESTING MATERIALS

Místo

W CONSHOHOCKEN

ISSN

2379-1365

Periodikum

Materials Performance and Characterization

Svazek

12

Číslo

2

Stát

Spojené státy americké

Strany od

78

Strany do

92

Strany počet

15

URL

https://www.astm.org/mpc20220076.html

BibTex

@article{BUT187322,
  author="SARKAR, A. and KLUSÁK, J. and KOZÁKOVÁ, K. and CHRIST, H.-J.",
  title="Very High Cycle Fatigue Behavior of Austenitic Stainless Steel in Annealed and Predeformed Condition",
  journal="Materials Performance and Characterization",
  year="2023",
  volume="12",
  number="2",
  pages="78--92",
  doi="10.1520/MPC20220076",
  issn="2379-1365",
  url="https://www.astm.org/mpc20220076.html"
}