MPEA Nb1 Ta0.667 Ti0.667 Zr0.333
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Familie: High-Entropy Alloy (MPEA)
High-entropy alloy. Phase: other. Processing: CAST.
Leistungsbewertungen
Performance Radar
| Eigenschaft | Rating |
|---|---|
| Strength | 7 / 10 |
| Corrosion Res. | 5 / 10 |
| Lightweight | 3 / 10 |
| Machinability | 4 / 10 |
| Affordability | 5 / 10 |
| Heat Res. | 5 / 10 |
Zusammensetzung
Mechanische Eigenschaften
| Zugfestigkeit | 852.0 MPa |
| Streckgrenze | 822.0 MPa |
| Bruchdehnung | 0.3% |
| Härte (Brinell) | 294.0 HB |
| Härte (Rockwell) |
Physikalische Eigenschaften
| Dichte | 9.200 g/cm³ |
Chemische Zusammensetzung
| Element | Prozentsatz (%) |
|---|---|
| Nb | 1,0 |
| Ta | 0,667 |
| Ti | 0,667 |
| Zr | 0,333 |
Bezugsquellen MPEA Nb1 Ta0.667 Ti0.667 Zr0.333
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Beschreibung
This medium-entropy alloy (MEA) with nominal composition Nb1 Ta0.667 Ti0.667 Zr0.333 is a predominantly face-centered cubic (FCC) austenitic alloy system within the multi-principal element alloy research space, incorporating niobium, tantalum, titanium, and zirconium. 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.