MPEA Hf0.5 Nb0.667 Ta0.333 Ti1 Zr0.833
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Famille: High-Entropy Alloy (MPEA)
High-entropy alloy. Phase: BCC. Processing: WROUGHT.
Notations de performance
Performance Radar
| Propriété | Rating |
|---|---|
| Strength | 5 / 10 |
| Corrosion Res. | 9 / 10 |
| Lightweight | 4 / 10 |
| Machinability | 3 / 10 |
| Affordability | 3 / 10 |
| Heat Res. | 8 / 10 |
Composition
Propriétés mécaniques
| Limite d'élasticité | 1370.0 MPa |
| Dureté (Rockwell) | |
| Module d'élasticité | 100.0 GPa |
Propriétés physiques
| Densité | 8.400 g/cm³ |
Composition chimique
| Élément | Pourcentage (%) |
|---|---|
| Hf | 0,5 |
| Nb | 0,667 |
| Ta | 0,333 |
| Ti | 1,0 |
| Zr | 0,833 |
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Description
This high-entropy alloy (HEA) with nominal composition Hf0.5 Nb0.667 Ta0.333 Ti1 Zr0.833 is a predominantly face-centered cubic (FCC) austenitic alloy system within the multi-principal element alloy research space, incorporating Hf, Nb, Ta and 2 additional elements. Key properties include very high melting point (>1800°C), excellent high-temperature strength retention, and good oxidation resistance at elevated temperatures; titanium additions promote intermetallic precipitation for additional strengthening. Investigated applications include high-temperature structural applications, advanced gas turbine components, nuclear energy systems, and refractory coating materials.