MPEA Hf0.787 Nb0.142 Ta0.142 Ti1 Zr0.787
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Familie: High-Entropy Alloy (MPEA)
High-entropy alloy. Phase: BCC. Processing: WROUGHT.
Leistungsbewertungen
Performance Radar
| Eigenschaft | Rating |
|---|---|
| Strength | 8 / 10 |
| Corrosion Res. | 9 / 10 |
| Lightweight | 4 / 10 |
| Machinability | 3 / 10 |
| Affordability | 3 / 10 |
| Heat Res. | 8 / 10 |
Zusammensetzung
Mechanische Eigenschaften
| Zugfestigkeit | 995.0 MPa |
| Streckgrenze | 540.0 MPa |
| Härte (Rockwell) | |
| Elastizitätsmodul | 92.0 GPa |
Physikalische Eigenschaften
| Dichte | 8.500 g/cm³ |
Chemische Zusammensetzung
| Element | Prozentsatz (%) |
|---|---|
| Hf | 0,787 |
| Nb | 0,142 |
| Ta | 0,142 |
| Ti | 1,0 |
| Zr | 0,787 |
Bezugsquellen MPEA Hf0.787 Nb0.142 Ta0.142 Ti1 Zr0.787
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Beschreibung
This high-entropy alloy (HEA) with nominal composition Hf0.787 Nb0.142 Ta0.142 Ti1 Zr0.787 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.