Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 147-157 |
| Seitenumfang | 11 |
| Fachzeitschrift | Materials at high temperatures |
| Jahrgang | 38 |
| Ausgabenummer | 3 |
| Publikationsstatus | Veröffentlicht - 1 März 2021 |
Abstract
The focus of this study is on assessing the chromium-depletion occurring in the subsurface layer associated with the formation of chromium oxide upon high-temperature exposure. As this is a critical aspect for the lifetime of many components made of nickel base alloys, a magnetic technique was developed that allowed assessing the chromium-depleted zone in a non-destructive manner. The samples made from alloy 718 were pre-oxidised in the temperature range from 700°C to 1200°C and then characterised both magnetically and by scanning electron microscopy. Analysis of the data obtained demonstrated that the magnetic measurements are capable of revealing the effect of oxidation temperature on microstructural degradation in the near subsurface layer. Specifically, analysis of the 3rd harmonic of the eddy current signal allowed inferring the oxidation temperature and the width of the chromium-depleted layer.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Keramische und Verbundwerkstoffe
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
- Ingenieurwesen (insg.)
- Werkstoffmechanik
- Ingenieurwesen (insg.)
- Maschinenbau
- Werkstoffwissenschaften (insg.)
- Metalle und Legierungen
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
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in: Materials at high temperatures, Jahrgang 38, Nr. 3, 01.03.2021, S. 147-157.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Microstructural degradation in the subsurface layer of the nickel base alloy 718 upon high-temperature oxidation
AU - Barton, S.
AU - Zaremba, D.
AU - Maier, H. J.
N1 - Funding Information: The authors thank the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for funding this study within the Collaborative Research Centre – SFB 871/3 – 119193472 “Regeneration of complex capital goods”, subproject A1.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - The focus of this study is on assessing the chromium-depletion occurring in the subsurface layer associated with the formation of chromium oxide upon high-temperature exposure. As this is a critical aspect for the lifetime of many components made of nickel base alloys, a magnetic technique was developed that allowed assessing the chromium-depleted zone in a non-destructive manner. The samples made from alloy 718 were pre-oxidised in the temperature range from 700°C to 1200°C and then characterised both magnetically and by scanning electron microscopy. Analysis of the data obtained demonstrated that the magnetic measurements are capable of revealing the effect of oxidation temperature on microstructural degradation in the near subsurface layer. Specifically, analysis of the 3rd harmonic of the eddy current signal allowed inferring the oxidation temperature and the width of the chromium-depleted layer.
AB - The focus of this study is on assessing the chromium-depletion occurring in the subsurface layer associated with the formation of chromium oxide upon high-temperature exposure. As this is a critical aspect for the lifetime of many components made of nickel base alloys, a magnetic technique was developed that allowed assessing the chromium-depleted zone in a non-destructive manner. The samples made from alloy 718 were pre-oxidised in the temperature range from 700°C to 1200°C and then characterised both magnetically and by scanning electron microscopy. Analysis of the data obtained demonstrated that the magnetic measurements are capable of revealing the effect of oxidation temperature on microstructural degradation in the near subsurface layer. Specifically, analysis of the 3rd harmonic of the eddy current signal allowed inferring the oxidation temperature and the width of the chromium-depleted layer.
KW - Alloy 718
KW - chromium depletion
KW - non-destructive testing
KW - oxidation
UR - http://www.scopus.com/inward/record.url?scp=85101887107&partnerID=8YFLogxK
U2 - 10.1080/09603409.2021.1895541
DO - 10.1080/09603409.2021.1895541
M3 - Article
AN - SCOPUS:85101887107
VL - 38
SP - 147
EP - 157
JO - Materials at high temperatures
JF - Materials at high temperatures
SN - 0960-3409
IS - 3
ER -