High-cycle fatigue behavior of IN 738LC superalloy at high temperatures

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F23%3A00587275" target="_blank" >RIV/68081723:_____/23:00587275 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.prostr.2022.12.248" target="_blank" >http://dx.doi.org/10.1016/j.prostr.2022.12.248</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.prostr.2022.12.248" target="_blank" >10.1016/j.prostr.2022.12.248</a>

Result language
angličtina
Original language name
High-cycle fatigue behavior of IN 738LC superalloy at high temperatures
Original language description
The presented study is focused on experimental results of high-cycle fatigue life of a cast polycrystalline nickel-based superalloy IN 738LC at temperatures of 800, 900, and 950 degrees C. The absence of hot isostatic pressing (HIP) led to the occurrence of casting defects in the microstructure. The fatigue tests were performed in symmetrical loading in laboratory air. The fracture surfaces of specimens were studied by scanning electron microscopy to describe the influence of temperature on the fatigue damage mechanism and fatigue crack initiation. Change in the primary crack propagation mechanism from crystalline (stage I regime) to non-crystalline (stage II regime) mechanism was observed with increasing temperature. However, the effect of changing mechanism caused by temperature dependence was unfavorably influenced by casting defects. (c) 2023 The Authors. Published by Elsevier B.V.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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