Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 69-78 |
| Seitenumfang | 10 |
| Fachzeitschrift | Materials characterization |
| Jahrgang | 75 |
| Publikationsstatus | Veröffentlicht - 1 Jan. 2013 |
| Extern publiziert | Ja |
Abstract
The fatigue crack growth of the nickel-based superalloy Haynes 230 was investigated at room temperature and 900 °C using digital image correlation (DIC). As expected, the crack growth rates at high temperature were much faster than at room temperature. However, the crack closure levels, which were determined using digital image correlation analysis techniques, were found to be similar for the two cases studied. DIC strain fields and the corresponding plastic zone sizes were compared between the two cases. From these strain fields, the slip irreversibility, the difference between forward and reversed strains at the crack tip, was quantitatively measured. The high temperature case had an order of magnitude higher amount of slip irreversibility. Slip irreversibility measurements were determined to be an effective method to compare fatigue crack growth of cases with differing temperatures.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
- Ingenieurwesen (insg.)
- Werkstoffmechanik
- Ingenieurwesen (insg.)
- Maschinenbau
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in: Materials characterization, Jahrgang 75, 01.01.2013, S. 69-78.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - High temperature fatigue crack growth of Haynes 230
AU - Pataky, Garrett J.
AU - Sehitoglu, Huseyin
AU - Maier, Hans J.
N1 - Publisher Copyright: © 2012 Elsevier Inc.
PY - 2013/1/1
Y1 - 2013/1/1
N2 - The fatigue crack growth of the nickel-based superalloy Haynes 230 was investigated at room temperature and 900 °C using digital image correlation (DIC). As expected, the crack growth rates at high temperature were much faster than at room temperature. However, the crack closure levels, which were determined using digital image correlation analysis techniques, were found to be similar for the two cases studied. DIC strain fields and the corresponding plastic zone sizes were compared between the two cases. From these strain fields, the slip irreversibility, the difference between forward and reversed strains at the crack tip, was quantitatively measured. The high temperature case had an order of magnitude higher amount of slip irreversibility. Slip irreversibility measurements were determined to be an effective method to compare fatigue crack growth of cases with differing temperatures.
AB - The fatigue crack growth of the nickel-based superalloy Haynes 230 was investigated at room temperature and 900 °C using digital image correlation (DIC). As expected, the crack growth rates at high temperature were much faster than at room temperature. However, the crack closure levels, which were determined using digital image correlation analysis techniques, were found to be similar for the two cases studied. DIC strain fields and the corresponding plastic zone sizes were compared between the two cases. From these strain fields, the slip irreversibility, the difference between forward and reversed strains at the crack tip, was quantitatively measured. The high temperature case had an order of magnitude higher amount of slip irreversibility. Slip irreversibility measurements were determined to be an effective method to compare fatigue crack growth of cases with differing temperatures.
KW - Crack closure
KW - Digital image correlation
KW - Fatigue crack growth
KW - Nickel-based superalloy
KW - Slip irreversibility
UR - http://www.scopus.com/inward/record.url?scp=84870187207&partnerID=8YFLogxK
U2 - 10.1016/j.matchar.2012.09.012
DO - 10.1016/j.matchar.2012.09.012
M3 - Article
AN - SCOPUS:84870187207
VL - 75
SP - 69
EP - 78
JO - Materials characterization
JF - Materials characterization
SN - 1044-5803
ER -