Fatigue lifetime assessment and crack propagation of Ni-based VDM Alloy 699 XA produced by additive manufacturing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00582279" target="_blank" >RIV/68081723:_____/24:00582279 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.prostr.2023.12.005" target="_blank" >http://dx.doi.org/10.1016/j.prostr.2023.12.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2023.12.005" target="_blank" >10.1016/j.prostr.2023.12.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue lifetime assessment and crack propagation of Ni-based VDM Alloy 699 XA produced by additive manufacturing

Popis výsledku v původním jazyce

The present work focuses on the low-cycle fatigue (LCF) behavior of conventionally and additively manufactured (laser powder nbed fusion (LPBF) technique, Ni-based VDM Alloy 699 XA. LCF tests were performed on miniature cylindrical specimens in a nsymmetrical push-pull cycle under strain control with a constant total strain amplitude at 23°C. Cyclic hardening/softening curves, ncyclic stress-strain curves, and fatigue life curves were obtained. Despite the present manufacturing defects associated with the nLPBF technology, the fatigue lifetime of the LPBF manufactured material is higher than that of conventionally prepared material. nFatigue crack initiation sites and fatigue crack propagation areas were investigated by means of scanning electron microscopyn(SEM). A quantitative fractography of fracture surfaces was introduced to provide a detailed description of fatigue crack growth nfrom the evaluation of striation spacing. The dependency of the stress intensity factor range on macroscopic crack growth rates was ndisplayed in the form of the Paris Law. The differences in fatigue lifetimes and fatigue crack growth rates of additively nmanufactured and hot rolled solution annealed alloy 699 XA plate material were discussed and correlated with respect to the nmicrostructural specifics of both material batches.

Název v anglickém jazyce

Fatigue lifetime assessment and crack propagation of Ni-based VDM Alloy 699 XA produced by additive manufacturing

Popis výsledku anglicky

The present work focuses on the low-cycle fatigue (LCF) behavior of conventionally and additively manufactured (laser powder nbed fusion (LPBF) technique, Ni-based VDM Alloy 699 XA. LCF tests were performed on miniature cylindrical specimens in a nsymmetrical push-pull cycle under strain control with a constant total strain amplitude at 23°C. Cyclic hardening/softening curves, ncyclic stress-strain curves, and fatigue life curves were obtained. Despite the present manufacturing defects associated with the nLPBF technology, the fatigue lifetime of the LPBF manufactured material is higher than that of conventionally prepared material. nFatigue crack initiation sites and fatigue crack propagation areas were investigated by means of scanning electron microscopyn(SEM). A quantitative fractography of fracture surfaces was introduced to provide a detailed description of fatigue crack growth nfrom the evaluation of striation spacing. The dependency of the stress intensity factor range on macroscopic crack growth rates was ndisplayed in the form of the Paris Law. The differences in fatigue lifetimes and fatigue crack growth rates of additively nmanufactured and hot rolled solution annealed alloy 699 XA plate material were discussed and correlated with respect to the nmicrostructural specifics of both material batches.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Procedia Structural Intergrity

ISBN

—

ISSN

2452-3216

e-ISSN

—

Počet stran výsledku

9

Strana od-do

43-51

Název nakladatele

Elsevier

Místo vydání

Amsterdam

Místo konání akce

London

Datum konání akce

12. 9. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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