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URN to cite this document: urn:nbn:de:bvb:703-epub-8206-7
Title data
Gadelmeier, Christian ; Agudo Jácome, L. ; Suárez Ocaño, P. ; Glatzel, Uwe:
Effect of stacking fault energy (SFE) of single crystal, equiatomic CrCoNi and Cantor alloy on creep resistance.
In: Materials Science & Engineering: A.
Vol. 908
(2024)
.
- 146779.
ISSN 0921-5093
DOI der Verlagsversion: https://doi.org/10.1016/j.msea.2024.146779
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Project information
| Project title: |
Project's official title Project's id No information GL 181/56 Compositionally Complex Alloys - High Entropy Alloys SPP 2006 |
|---|---|
| Project financing: |
Deutsche Forschungsgemeinschaft |
Abstract
Compared to mechanisms like solid solution strengthening, the stacking fault energy (SFE) should be considered as a further factor that influences the material properties. The effect of SFE of alloys or individual elements on strength and resistance can vary considerably. In the high-temperature regime above 700 °C, there are still significant gaps in the knowledge about the effect of the SFE on the mechanical properties of single-phase alloys. The effect of SFE on creep resistance of two face-entered cubic equiatomic medium and high entropy alloys, CrCoNi and CrMnFeCoNi, respectively, is evaluated to fill parts of these gaps. Using the Bridgman solidification process, the alloys were produced as single crystals and crept under vacuum at 700 °C up to 1100 °C. This work shows a significant impact of the lower SFE of CrCoNi on the creep behavior compared to the results of previous investigations of CrMnFeCoNi. The creep resistance of the former is higher over the complete temperature range. At very high temperatures, the strengthening effect of the stacking faults is significantly present. The formation of tetragonal stacking faults and extended dislocation nodes can be identified as the reason for this effect.
Further data
| Item Type: | Article in a journal |
|---|---|
| Keywords: | Medium entropy alloy; MEA; HEA; Single crystal; CrCoNi; Creep; Stacking fault energy |
| DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
| Institutions of the University: | Faculties > Faculty of Engineering Science > Chair Metals and Alloys > Chair Metals and Alloys - Univ.-Prof. Dr.-Ing. Uwe Glatzel Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Metals and Alloys |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-8206-7 |
| Date Deposited: | 17 Feb 2025 08:35 |
| Last Modified: | 17 Feb 2025 08:36 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/8206 |
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