MPEA Nb1 Re0.3 Ti1 Zr1
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Family: High-Entropy Alloy (MPEA)
High-entropy alloy. Phase: other. Processing: OTHER.
Performance Ratings
Performance Radar
Composition
Mechanical Properties
| Yield Strength | 323.0 MPa |
| Hardness (Rockwell) |
Physical Properties
| Density | 7.500 g/cm³ |
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nb | 1,0 |
| Re | 0,3 |
| Ti | 1,0 |
| Zr | 1,0 |
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Description
This medium-entropy alloy (MEA) with nominal composition Nb1 Re0.3 Ti1 Zr1 is a predominantly face-centered cubic (FCC) austenitic alloy system within the multi-principal element alloy research space, incorporating niobium, rhenium, 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; rhenium suppresses diffusivity improving creep resistance. Investigated applications include high-temperature structural applications, advanced gas turbine components, nuclear energy systems, and refractory coating materials.