Pinning-dominated strengthening in high-entropy superalloys
Hierarchical microstructural design of high-entropy superalloys offers novel strengthening pathways beyond classical superalloys. Here we assess the strength of isolated γ’ precipitates with and without an additional internal γ nanophase. The results show that nano-precipitation within the γ’ phase leads to a marked statistical reduction of the dislocation-nucleation limited yield strength. In concert with disorder-driven chemical weakening of the γ’ phase, these findings indicate that bulk strengthening due to hierarchical microstructural design in high-entropy superalloys must primarily be pinning dominated.
Authors
- E. Zaiser (ORCID: https://orcid.org/0000-0003-1289-7671)
- R. Maaß (ORCID: https://orcid.org/0000-0001-8329-4566)
- An‐Chou Yeh (ORCID: https://orcid.org/0000-0002-9460-8345)
- Hideyuki Murakami (ORCID: https://orcid.org/0000-0001-8220-5816)
- Anna M. Manzoni (ORCID: https://orcid.org/0000-0001-7252-9286)
- Adnan Fareed
- Florian Vogel (ORCID: https://orcid.org/0000-0001-6675-8920)
- Wei-Che Hsu
- Melanie C. Paulisch-Rinke
Institutions
- Federal Institute For Materials Research and Testing (DE)
- University of Illinois Urbana-Champaign (US)
- National Institute for Materials Science (JP)
- National Tsing Hua University (TW)
- Helmholtz-Zentrum Berlin für Materialien und Energie (DE)
- Guangdong Institute of New Materials (CN)
- Technische Universität Berlin (DE)
- Technical University of Munich (DE)
- South China University of Technology (CN)
Publication Details
- Journal
- Scripta Materialia
- Published
- 2025-07-20
- DOI
- https://doi.org/10.1016/j.scriptamat.2025.116874
- Citations
- 4
- Primary Topic
- High Entropy Alloys Studies
- Type
- article
- Field-Weighted Citation Impact
- 2.85