Abstract
New Fe<inf>25</inf>Co<inf>25</inf>Ni<inf>25</inf>(B, Si)<inf>25</inf> high entropy bulk metallic glasses (HE-BMGs) with superior soft magnetic and mechanical properties are developed. The HE-BMGs show high glass transition temperature and wide supercooled liquid region (ΔT<inf>x</inf>). Fully glassy rods with diameters up to 1.5 mm were fabricated for the Fe<inf>25</inf>Co<inf>25</inf>Ni<inf>25</inf>(B<inf>0.7</inf>Si<inf>0.3</inf>)<inf>25</inf> alloy by copper mold casting method. The HE-BMGs exhibit high yield strength of ∼3624 MPa with large plastic strain of ∼3.1%, which is superior to the pre-developed HE-BMGs. The alloys also possess good soft magnetic properties, i.e., rather high saturation magnetization of ∼0.87 T, low coercive force of ∼1.1 A/m, and high effective permeability at 1 kHz of ∼19,800. This combination of these excellent properties gives the new HE-BMGs good promise for both scientific and engineering applications.
| Original language | English |
|---|---|
| Pages (from-to) | 8-12 |
| Number of pages | 5 |
| Journal | Intermetallics |
| Volume | 66 |
| DOIs | |
| Publication status | Published - 2015 Jun 26 |
Keywords
- Glass forming ability
- High-entropy alloys
- Magnetic properties
- Mechanical properties
- Metallic glasses
- Thermal properties
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Materials Chemistry
- Metals and Alloys
- Chemistry(all)