A comparison of conventional and additively manufactured 316L under thermomechanical fatigue
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00587686" target="_blank" >RIV/68081723:_____/24:00587686 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0142112324003359?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0142112324003359?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijfatigue.2024.108477" target="_blank" >10.1016/j.ijfatigue.2024.108477</a>
Alternative languages
Result language
angličtina
Original language name
A comparison of conventional and additively manufactured 316L under thermomechanical fatigue
Original language description
The present study compares the thermomechanical fatigue (TMF) behaviour of 316L stainless steel manufactured conventionally by hot rolling and additively by laser powder bed fusion (L-PBF). Machined cylindrical specimens were tested under strain-controlled in-phase and out-of-phase TMF loading at a temperature range of 550–750 °C and total mechanical strain amplitudes of εamech = 0.2–0.6 %. While the conventional 316L significantly outperforms the L-PBF 316L under in-phase TMF, their lifetimes are comparable under out-of-phase TMF. Under in-phase TMF, creep damage in the form of intergranular crack networks occurs which is significantly more pronounced for the L-PBF 316L due to the higher amount of interfaces. Under out-of-phase TMF, the damage is mostly due to stress-assisted oxide cracking and the crack propagation is fatigue-dominated. TEM inspection revealed that L-PBF 316L exhibits a cellular dislocation structure in the initial state, which rearranges only slightly during cycling. For conventional 316L similar dislocation cells form during TMF cycling indicating that they represent a stable dislocation arrangement in 316L under TMF loading. This is evidenced by the rather stable cyclic stress response of the L-PBF material when compared to the conventional material.
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
<a href="/en/project/GA23-05372S" target="_blank" >GA23-05372S: Surface and subsurface erosion due to multiple droplet impingement</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
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
187
Issue of the periodical within the volume
OCT
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
108477
UT code for WoS article
001265238200001
EID of the result in the Scopus database
2-s2.0-85197216323