Zhang, Z;
Khong, JC;
Koe, B;
Luo, S;
Huang, S;
Qin, L;
Cipiccia, S;
... Mi, J; + view all
(2021)
Multiscale characterization of the 3D network structure of metal carbides in a Ni superalloy by synchrotron X-ray microtomography and ptychography.
Scripta Materialia
, 193
pp. 71-76.
10.1016/j.scriptamat.2020.10.032.
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Abstract
Synchrotron X-ray microtomography and ptychography were used to characterize the 3D network structure, morphology and distribution of metal carbides in an as-cast IN713LC Ni superalloy. MC typed carbides were found to distribute mainly on the grain boundary between the matrix γ and γ' phase. The differences in solidification cooling rate had a minor influence on the volume fraction of the MC type carbides, but significantly affected the carbide size, distribution and network morphology. Depending on the local composition of the remaining liquid phase and geometric constraints, the carbides can form either spherical or strip or network morphologies. The research demonstrated clearly the advantage and technical potential of using the two complementary tomography techniques synergistically to characterize non-destructively complex multiple-phase structures in three dimensional space with a spatial resolution of ~30 nm.
| Type: | Article |
|---|---|
| Title: | Multiscale characterization of the 3D network structure of metal carbides in a Ni superalloy by synchrotron X-ray microtomography and ptychography |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.scriptamat.2020.10.032 |
| Publisher version: | https://doi.org/10.1016/j.scriptamat.2020.10.032 |
| Language: | English |
| Additional information: | Copyright © 2020 Acta Materialia Inc. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Synchrotron X-ray microtomography, Ptychography, Metal carbides, IN713LC Ni superalloy |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10118202 |
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