Deformation-induced grain boundary segregation in a powder-metallurgy ultrafine-grained MoNbTaTiV refractory high-entropy alloy
A powder-metallurgy MoNbTaTiV refractory high-entropy alloy synthesized by mechanical alloying (MA) and spark plasma sintering was subjected to hot deformations at different temperatures and strain rates. The microstructural morphologies were characterized, and component element segregation was elucidated. With grain refinement and lattice strain increase, the large inhomogeneous milled powder became refined and homogeneous after the MA. Component element segregation was observed at relatively low deformation temperatures and high strain rates. As the deformation temperature increased and the strain rate decreased, the segregation gradually disappeared, which was attributed to dislocation movement.
Authors
- Qing Liu (ORCID: https://orcid.org/0000-0001-8980-2250)
- Hang Liang (ORCID: https://orcid.org/0000-0001-7440-8349)
- Junjiang Zhu (ORCID: https://orcid.org/0000-0003-1107-1659)
- Wei Guan (ORCID: https://orcid.org/0000-0001-6985-327X)
- Xiaoguang Li (ORCID: https://orcid.org/0000-0001-8283-8357)
- Guofeng Wang (ORCID: https://orcid.org/0000-0002-6001-2930)
- Yongchang Liu (ORCID: https://orcid.org/0000-0001-5024-4394)
- Lei Cui (ORCID: https://orcid.org/0009-0004-1310-3946)
- Yongkang Liu (ORCID: https://orcid.org/0000-0003-0641-9518)
- Rui Zhan
Institutions
- Tianjin University (CN)
- Harbin Institute of Technology (CN)
- Beijing Institute of Power Machinery (China) (CN)
- Aero Engine Corporation of China (China) (CN)
Publication Details
- Journal
- Heliyon
- Published
- 2024-09-01
- DOI
- https://doi.org/10.1016/j.heliyon.2024.e37392
- Citations
- 4
- Primary Topic
- High Entropy Alloys Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.85