Isothermal low-cycle fatigue and fatigue-creep behaviour of boron-added 9% Cr martensitic stainless steel at 600◦Cn

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00604090" target="_blank" >RIV/68081723:_____/25:00604090 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0142112324006595?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0142112324006595?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijfatigue.2024.108800" target="_blank" >10.1016/j.ijfatigue.2024.108800</a>

Result language

angličtina

Original language name

Isothermal low-cycle fatigue and fatigue-creep behaviour of boron-added 9% Cr martensitic stainless steel at 600◦Cn

Original language description

In this article, strain-controlled Low-Cycle Fatigue (LCF) and fatigue-creep tests were conducted on COST FB2,na boron-added 9% Cr martensitic stainless steel, at 600◦C. LCF tests were performed with a mechanical strainnrate of 1 × 10−3/s, while the fatigue-creep tests involved either tensile or compressive strain dwells lastingn600 s. Both the LCF and fatigue-creep tests revealed cyclic softening behaviour, with the magnitude of relaxednstress decreasing with cycles in the fatigue-creep tests. This softening was associated with the coarsening ofnthe laths and subgrains and a reduction in dislocation density, both of which were more pronounced fornLCF loading at higher strain amplitudes and during fatigue-creep loading. Investigations into the damagenmechanisms identified environmentally assisted transgranular cracking as the predominant failure mode, withnthe severity of oxidation-induced cracking increasing with higher applied strain amplitudes or during fatigue creep loading with compressive dwell, while cracking was suppressed during tests with tensile strain dwell.nFinally, a damage model combining the strain-life approach with a time-dependent damage term was proposednto effectively predict the reduction in lifetime during fatigue-creep tests compared to continuous LCF cycling.n

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Fatigue

ISSN

0142-1123

e-ISSN

1879-3452

Volume of the periodical

193

Issue of the periodical within the volume

APR

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

108800

UT code for WoS article

001400618200001

EID of the result in the Scopus database

2-s2.0-85214564111