MPEA Hf1 Mo1 Ta1 Ti1 Zr1
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Famille: High-Entropy Alloy (MPEA)
High-entropy alloy. Phase: BCC. Processing: CAST.
Notations de performance
Performance Radar
| Propriété | Rating |
|---|---|
| Strength | 10 / 10 |
| Corrosion Res. | 5 / 10 |
| Lightweight | 3 / 10 |
| Machinability | 3 / 10 |
| Affordability | 5 / 10 |
| Heat Res. | 5 / 10 |
Composition
Propriétés mécaniques
| Résistance à la traction | 1594.5 MPa |
| Limite d'élasticité | 855.0 MPa |
| Allongement | 19.0% |
| Dureté (Brinell) | 542.0 HB |
| Dureté (Rockwell) | |
| Module d'élasticité | 143.0 GPa |
Propriétés physiques
| Densité | 10.200 g/cm³ |
Composition chimique
| Élément | Pourcentage (%) |
|---|---|
| Hf | 1,0 |
| Mo | 1,0 |
| Ta | 1,0 |
| Ti | 1,0 |
| Zr | 1,0 |
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Description
This high-entropy alloy (HEA) with nominal composition Hf1 Mo1 Ta1 Ti1 Zr1 is a predominantly face-centered cubic (FCC) austenitic alloy system within the multi-principal element alloy research space, incorporating Hf, Mo, 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; molybdenum/tungsten additions provide enhanced solid-solution strengthening and creep resistance; 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.