Details
| Original language | English |
|---|---|
| Pages (from-to) | 6087-6098 |
| Number of pages | 12 |
| Journal | Journal of Materials Engineering and Performance |
| Volume | 26 |
| Issue number | 12 |
| Publication status | Published - 2 Nov 2017 |
Abstract
Nimonic 101 is one of the early nickel-based superalloys developed for the use in gas turbines. In such environments, the material is exposed to a combination of both high temperatures and mechanical loads for a long duration. Hence, thermal creep is of the utmost concern as it often limits service life. This study focuses on creep tests, carried out on Nimonic 101 at different temperatures under a constant tensile load of 735 MPa. To characterize the microstructural evolution, electron backscatter diffraction (EBSD) measurements were employed before and after loading. At higher temperatures, a significant change of the microstructure was observed. The grains elongated and aligned their orientation along the load axis. In parallel, a crystal plasticity material model has been set up in the classical large deformation framework. Modeling results are compared to the acquired EBSD data.
Keywords
- creep, dislocation density, EBSD, large strain crystal plasticity, Nimonic 101, SEM
ASJC Scopus subject areas
- Materials Science(all)
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Journal of Materials Engineering and Performance, Vol. 26, No. 12, 02.11.2017, p. 6087-6098.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - An EBSD Evaluation of the Microstructure of Crept Nimonic 101 for the Validation of a Polycrystal–Plasticity Model
AU - Reschka, S.
AU - Munk, L.
AU - Wriggers, P.
AU - Maier, H. J.
N1 - Funding information: Financial support of this study by the German Science Foundation (DFG) under contracts MA1175/63-1 and WR19/57-1 is gratefully acknowledged.
PY - 2017/11/2
Y1 - 2017/11/2
N2 - Nimonic 101 is one of the early nickel-based superalloys developed for the use in gas turbines. In such environments, the material is exposed to a combination of both high temperatures and mechanical loads for a long duration. Hence, thermal creep is of the utmost concern as it often limits service life. This study focuses on creep tests, carried out on Nimonic 101 at different temperatures under a constant tensile load of 735 MPa. To characterize the microstructural evolution, electron backscatter diffraction (EBSD) measurements were employed before and after loading. At higher temperatures, a significant change of the microstructure was observed. The grains elongated and aligned their orientation along the load axis. In parallel, a crystal plasticity material model has been set up in the classical large deformation framework. Modeling results are compared to the acquired EBSD data.
AB - Nimonic 101 is one of the early nickel-based superalloys developed for the use in gas turbines. In such environments, the material is exposed to a combination of both high temperatures and mechanical loads for a long duration. Hence, thermal creep is of the utmost concern as it often limits service life. This study focuses on creep tests, carried out on Nimonic 101 at different temperatures under a constant tensile load of 735 MPa. To characterize the microstructural evolution, electron backscatter diffraction (EBSD) measurements were employed before and after loading. At higher temperatures, a significant change of the microstructure was observed. The grains elongated and aligned their orientation along the load axis. In parallel, a crystal plasticity material model has been set up in the classical large deformation framework. Modeling results are compared to the acquired EBSD data.
KW - creep
KW - dislocation density
KW - EBSD
KW - large strain crystal plasticity
KW - Nimonic 101
KW - SEM
UR - http://www.scopus.com/inward/record.url?scp=85032940153&partnerID=8YFLogxK
U2 - 10.1007/s11665-017-3046-3
DO - 10.1007/s11665-017-3046-3
M3 - Review article
AN - SCOPUS:85032940153
VL - 26
SP - 6087
EP - 6098
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
SN - 1059-9495
IS - 12
ER -