Enhancement of mechanical properties in 3D-printed Zr-based bulk metallic glass composites via multiscale heterogeneous structures
The inescapable precipitation of brittle intermetallics in 3D-printed bulk metallic glasses (BMGs) significantly deteriorates their plasticity. To solve this problem, a novel scanning strategy (alternating high and low laser energy density between layers) was developed to regulate B2-CuZr distribution in the 3D-printed Zr47.5Cu45.5Al5Co2 alloy, producing a multiscale heterostructure. The coupling effect of B2-CuZr phase transformation and multiscale heterostructure promotes the formation of massive shear bands while suppressing their unstable propagation, significantly enhancing the strength-plasticity synergy with ∼1.2 GPa yield strength, ∼1.9 GPa fracture strength and ∼7% plastic strain. This work offers a novel avenue to fabricate high-performance BMG composites.
Authors
- Lin Yuan (ORCID: https://orcid.org/0000-0002-1015-5319)
- P Zhang
- Jie Pan
- Cheng Zhang
- Lin Liu
- Di Ouyang
- Huaping Ding
Institutions
- Southwest University (CN)
- Wuhan University of Technology (CN)
- Songshan Lake Materials Laboratory (CN)
- Huazhong University of Science and Technology (CN)
Publication Details
- Journal
- Materials Research Letters
- Published
- 2026-01-07
- DOI
- https://doi.org/10.1080/21663831.2025.2611735
- Primary Topic
- Metallic Glasses and Amorphous Alloys
- Type
- article
- Field-Weighted Citation Impact
- 0.00