Details
| Original language | English |
|---|---|
| Pages (from-to) | 12593–12603 |
| Journal | Journal of Materials Engineering and Performance |
| Volume | 33 |
| Early online date | 6 Sept 2024 |
| Publication status | Published - Nov 2024 |
Abstract
Nickel-based superalloys are typically employed for high-temperature applications. One well-known degradation mechanism is the rafting of the γ′-phase. In this study, it was investigated, whether a high current impulse treatment is suitable to induce changes in element distribution that are opposite to those observed during the rafting process. Thus, samples of CMSX-4 were treated with high current impulses up to 4 kA/mm2. Energy-dispersive x-ray spectroscopy measurements showed changes in element distribution due to these treatments. The changes in element distribution were observed to become more pronounced with increasing current density and partly counteracted those induced by prior creep. The extent of the compositional changes also depends on the element. Variations in the Al and Ta content showed stronger tendencies than, e.g., Cr, Co and W.
Keywords
- creep, element distribution, nickel-based alloy, short current impulse
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Journal of Materials Engineering and Performance, Vol. 33, 11.2024, p. 12593–12603.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of High Current Impulses on Element Distribution in Creep-Deformed Single-Crystal Ni-Based Superalloys
AU - Reschka, Silvia
AU - Gerstein, Gregory
AU - Herbst, Sebastian
AU - Epishin, Alexander
AU - Maier, Hans Jürgen
N1 - Publisher Copyright: © The Author(s) 2024.
PY - 2024/11
Y1 - 2024/11
N2 - Nickel-based superalloys are typically employed for high-temperature applications. One well-known degradation mechanism is the rafting of the γ′-phase. In this study, it was investigated, whether a high current impulse treatment is suitable to induce changes in element distribution that are opposite to those observed during the rafting process. Thus, samples of CMSX-4 were treated with high current impulses up to 4 kA/mm2. Energy-dispersive x-ray spectroscopy measurements showed changes in element distribution due to these treatments. The changes in element distribution were observed to become more pronounced with increasing current density and partly counteracted those induced by prior creep. The extent of the compositional changes also depends on the element. Variations in the Al and Ta content showed stronger tendencies than, e.g., Cr, Co and W.
AB - Nickel-based superalloys are typically employed for high-temperature applications. One well-known degradation mechanism is the rafting of the γ′-phase. In this study, it was investigated, whether a high current impulse treatment is suitable to induce changes in element distribution that are opposite to those observed during the rafting process. Thus, samples of CMSX-4 were treated with high current impulses up to 4 kA/mm2. Energy-dispersive x-ray spectroscopy measurements showed changes in element distribution due to these treatments. The changes in element distribution were observed to become more pronounced with increasing current density and partly counteracted those induced by prior creep. The extent of the compositional changes also depends on the element. Variations in the Al and Ta content showed stronger tendencies than, e.g., Cr, Co and W.
KW - creep
KW - element distribution
KW - nickel-based alloy
KW - short current impulse
UR - http://www.scopus.com/inward/record.url?scp=85203249552&partnerID=8YFLogxK
U2 - 10.1007/s11665-024-10054-z
DO - 10.1007/s11665-024-10054-z
M3 - Article
AN - SCOPUS:85203249552
VL - 33
SP - 12593
EP - 12603
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
SN - 1059-9495
ER -