Abstract
In this study, we additively manufactured a CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy (HEA), with alternating layers of both constituent materials, that exhibits enhanced strength-plasticity synergy during compression (yield strength up to 990 MPa and no complete fracture until 80% strain), surpassing those of monolithic bulk HEAs. The enhanced strength-plasticity synergy originates from heterogenous microstructures of ultra-hard body-centered-cubic equiaxed grains and soft face-centered-cubic columnar grains periodically arranged in the AlCoCrFeNiTi0.5 and CrMnFeCoNi lamellae, respectively. This study demonstrates a feasible and flexible way to design HEAs with heterogenous microstructures and superior mechanical properties.
| Original language | English |
|---|---|
| Pages (from-to) | 133-138 |
| Number of pages | 6 |
| Journal | Scripta Materialia |
| Volume | 183 |
| DOIs | |
| Publication status | Published - 1 Jul 2020 |
Keywords
- Additive manufacturing
- Heterogenous microstructure
- Laminated high-entropy alloy
- Strength-plasticity synergy
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
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