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  Effect of Wall Thickness and Surface Conditions on Creep Behavior of a Single-Crystal Ni-Based Superalloy

Körber, S., Wolff-Goodrich, S., Völkl, R., & Glatzel, U. (2022). Effect of Wall Thickness and Surface Conditions on Creep Behavior of a Single-Crystal Ni-Based Superalloy. Metals, 12(7): 1081. doi:10.3390/met12071081.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000A-AAB4-B Version Permalink: https://hdl.handle.net/21.11116/0000-000A-AAB5-A
Genre: Journal Article

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https://hdl.handle.net/21.11116/0000-000A-AAB6-9
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Copyright Date:
2022
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http://creativecommons.org/licenses/by/4.0/

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 Creators:
Körber, Selina1, Author
Wolff-Goodrich, Silas2, Author           
Völkl, Rainer1, Author
Glatzel, Uwe1, Author
Affiliations:
1Metals and Alloys, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany, ou_persistent22              
2Advanced Transmission Electron Microscopy, Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863399              

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 Abstract: The influence of wall thickness and specimen surface on the creep behavior of the single-crystal nickel-based superalloy MAR M247LC is studied. Specimens with wall thicknesses of 0.4, 0.8, 1 and 2 mm, with and without casting surface, are compared to specimens of the same wall thickness prepared from bulk material. Creep behavior turned out to be independent from surface conditions even for the thinnest specimens. The thickness debit effect is not pronounced for short creep rupture times (le;100 h at 980 deg;C), whereas it is significant for creep rupture times longer than ~200 h at 980 deg;C. The thickness debit effect is time-dependent and caused by oxidation and diffusion-controlled mechanisms.

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Language(s): eng - English
 Dates: 2022-06-24
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.3390/met12071081
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Title: Metals
  Other : Metals
Source Genre: Journal
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Publ. Info: Basel : MDPI AG
Pages: - Volume / Issue: 12 (7) Sequence Number: 1081 Start / End Page: - Identifier: ISSN: 2075-4701
CoNE: https://pure.mpg.de/cone/journals/resource/metals