MPEA Nb1 Ta1 Ti1 W1
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Family: High-Entropy Alloy (MPEA)
High-entropy alloy. Phase: BCC. Processing: ANNEAL.
Performance Ratings
Performance Radar
Composition
Mechanical Properties
| Yield Strength | 690.5 MPa |
| Hardness (Rockwell) | |
| Elastic Modulus | 198.0 GPa |
Physical Properties
| Density | 12.100 g/cm³ |
Chemical Composition
| Element | Percentage (%) |
|---|---|
| W | 1.0 |
| Nb | 1.0 |
| Ta | 1.0 |
| Ti | 1.0 |
Where to Buy MPEA Nb1 Ta1 Ti1 W1
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Description
This medium-entropy alloy (MEA) with nominal composition Nb1 Ta1 Ti1 W1 is a predominantly face-centered cubic (FCC) austenitic alloy system within the multi-principal element alloy research space, incorporating niobium, tantalum, titanium, and tungsten. 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.