Microstructure and mechanical properties of titanium aluminum carbides neutron irradiated at 400–700 °C
Abstract
Here, this work reports the first mechanical properties of Ti3AlC2-Ti5Al2C3 materials neutron irradiated at ~400, 630 and 700 °C at a fluence of 2 × 1025 n m-2 (E > 0.1 MeV) or a displacement dose of ~2 dpa. After irradiation at ~400 °C, anisotropic swelling and loss of 90% flexural strength was observed. After irradiation at ~630–700 °C, properties were unchanged. Microcracking and kinking-delamination had occurred during irradiation at ~630–700 °C. Further examination showed no cavities in Ti3AlC2 after irradiation at ~630 °C, and MX and A lamellae were preserved. However, disturbance of (0004) reflections corresponding to M-A layers was observed, and the number density of line/planar defects was ~1023 m-3 of size 5–10 nm. HAADF identified these defects as antisite TiAl atoms. Finally, Ti3AlC2-Ti5Al2C3 shows abrupt dynamic recovery of A-layers from ~630 °C, but a higher temperature appears necessary for full recovery.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); General Atomics, San Diego, CA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1355877
- Alternate Identifier(s):
- OSTI ID: 1417111
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the European Ceramic Society
- Additional Journal Information:
- Journal Volume: 37; Journal Issue: 6; Journal ID: ISSN 0955-2219
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; MAX phase; neutron irradiation; mechanical properties; dynamic recovery; fracture
Citation Formats
Ang, Caen, Parish, Chad M., Shih, Chunghao, Silva, Chinthaka, and Katoh, Yutai. Microstructure and mechanical properties of titanium aluminum carbides neutron irradiated at 400–700 °C. United States: N. p., 2017.
Web. doi:10.1016/j.jeurceramsoc.2017.01.024.
Ang, Caen, Parish, Chad M., Shih, Chunghao, Silva, Chinthaka, & Katoh, Yutai. Microstructure and mechanical properties of titanium aluminum carbides neutron irradiated at 400–700 °C. United States. https://doi.org/10.1016/j.jeurceramsoc.2017.01.024
Ang, Caen, Parish, Chad M., Shih, Chunghao, Silva, Chinthaka, and Katoh, Yutai. Thu .
"Microstructure and mechanical properties of titanium aluminum carbides neutron irradiated at 400–700 °C". United States. https://doi.org/10.1016/j.jeurceramsoc.2017.01.024. https://www.osti.gov/servlets/purl/1355877.
@article{osti_1355877,
title = {Microstructure and mechanical properties of titanium aluminum carbides neutron irradiated at 400–700 °C},
author = {Ang, Caen and Parish, Chad M. and Shih, Chunghao and Silva, Chinthaka and Katoh, Yutai},
abstractNote = {Here, this work reports the first mechanical properties of Ti3AlC2-Ti5Al2C3 materials neutron irradiated at ~400, 630 and 700 °C at a fluence of 2 × 1025 n m-2 (E > 0.1 MeV) or a displacement dose of ~2 dpa. After irradiation at ~400 °C, anisotropic swelling and loss of 90% flexural strength was observed. After irradiation at ~630–700 °C, properties were unchanged. Microcracking and kinking-delamination had occurred during irradiation at ~630–700 °C. Further examination showed no cavities in Ti3AlC2 after irradiation at ~630 °C, and MX and A lamellae were preserved. However, disturbance of (0004) reflections corresponding to M-A layers was observed, and the number density of line/planar defects was ~1023 m-3 of size 5–10 nm. HAADF identified these defects as antisite TiAl atoms. Finally, Ti3AlC2-Ti5Al2C3 shows abrupt dynamic recovery of A-layers from ~630 °C, but a higher temperature appears necessary for full recovery.},
doi = {10.1016/j.jeurceramsoc.2017.01.024},
journal = {Journal of the European Ceramic Society},
number = 6,
volume = 37,
place = {United States},
year = {Thu Feb 23 00:00:00 EST 2017},
month = {Thu Feb 23 00:00:00 EST 2017}
}
Web of Science
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