Low-cycle fatigue behaviour of boron-added 9% Cr martensitic steel: Effects of temperature, strain rate, and strain amplitude
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00637445" target="_blank" >RIV/68081723:_____/25:00637445 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/25:00384523
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S014211232500307X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S014211232500307X?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijfatigue.2025.109110" target="_blank" >10.1016/j.ijfatigue.2025.109110</a>
Alternative languages
Result language
angličtina
Original language name
Low-cycle fatigue behaviour of boron-added 9% Cr martensitic steel: Effects of temperature, strain rate, and strain amplitude
Original language description
The Low-Cycle Fatigue (LCF) behaviour of a boron-added 9% Cr martensitic stainless steel, COST FB2, was investigated at temperatures of 300 °C, 600 °C, and 650 °C. Mechanical strain amplitudes were prescribed between 3×10<sup>−3</sup> and 8×10<sup>−3</sup>, with four different strain rates ranging from 3.3¯×10<sup>−5</sup>/s to 1×10<sup>−2</sup>/s applied at the higher test temperatures. Cyclic softening was observed under all the investigated loading conditions, driven by a reduction in dislocation density and lath coarsening, which became more pronounced at higher strain amplitudes and temperatures. Investigations into the damage mechanisms revealed transgranular cracking as the predominant failure mode, with the frequency of secondary cracks increasing with strain amplitude. At 600 °C and 650 °C, environmentally assisted cracking and oxidation effects became more significant, especially at higher strain amplitudes and lower loading frequencies. Fatigue lifetime decreased with an increasing temperature and strain amplitude, and a decreasing strain rate. To account for the environmentally assisted cracking effects, a frequency-modified Manson–Coffin model was proposed. This modified model accurately captured the reduction in lifetime at lower mechanical strain rates.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Fatigue
ISSN
0142-1123
e-ISSN
1879-3452
Volume of the periodical
200
Issue of the periodical within the volume
NOV
Country of publishing house
GB - UNITED KINGDOM
Number of pages
18
Pages from-to
109110
UT code for WoS article
001530594400001
EID of the result in the Scopus database
2-s2.0-105009265758