dc.identifier.uri |
http://dx.doi.org/10.15488/12743 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/12843 |
|
dc.contributor.author |
Munk, Lukas
|
|
dc.contributor.author |
Reschka, Silvia
|
|
dc.contributor.author |
Maier, Hans Jürgen
|
|
dc.contributor.author |
Wriggers, Peter
|
|
dc.contributor.author |
Löhnert, Stefan
|
|
dc.date.accessioned |
2022-09-08T12:03:16Z |
|
dc.date.available |
2022-09-08T12:03:16Z |
|
dc.date.issued |
2022 |
|
dc.identifier.citation |
Munk, L.; Reschka, S.; Maier, H.J.; Wriggers, P.; Löhnert, S.: A Sharp-Interface Model of the Diffusive Phase Transformation in a Nickel-Based Superalloy. In: Metals : open access journal 12 (2022), Nr. 8, 1261. DOI: https://doi.org/10.3390/met12081261 |
|
dc.description.abstract |
A sharp-interface model employing the extended finite element method is presented. It is designed to capture the prominent γ-γ′ phase transformation in nickel-based superalloys. The novel combination of crystal plasticity and sharp-interface theory outlines a good modeling alternative to approaches based on the Cahn–Hilliard equation. The transformation is driven by diffusion of solute γ′-forming elements in the γ-phase. Boundary conditions for the diffusion problem are computed by the stress-modified Gibbs–Thomson equation. The normal mass balance of solute atoms at the interface yields the normal interface velocity, which is integrated in time by a level set procedure. In order to capture the influence of dislocation glide and climb on interface motion, a crystal plasticity model is assumed to describe the constitutive behaviour of the γ-phase. Cuboidal equilibrium shapes and Ostwald ripening can be reproduced. According to the model, in low γ′ volume-fraction alloys with separated γ′-precipitates, interface movement does not have a significant effect on tensile creep behaviour at various lattice orientations. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Basel : MDPI |
|
dc.relation.ispartofseries |
Metals : open access journal 12 (2022), Nr. 8 |
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dc.rights |
CC BY 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
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dc.subject |
sharp-interface theory |
eng |
dc.subject |
crystal plasticity |
eng |
dc.subject |
phase transformation |
eng |
dc.subject |
diffusion |
eng |
dc.subject |
XFEM |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
A Sharp-Interface Model of the Diffusive Phase Transformation in a Nickel-Based Superalloy |
|
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
2075-4701 |
|
dc.relation.doi |
https://doi.org/10.3390/met12081261 |
|
dc.bibliographicCitation.issue |
8 |
|
dc.bibliographicCitation.volume |
12 |
|
dc.bibliographicCitation.firstPage |
1261 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|