MPEA Hf1 Sc1 Ti1 Zr1
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Family: High-Entropy Alloy (MPEA)
High-entropy alloy. Phase: other. Processing: CAST.
Performance Ratings
Performance Radar
Composition
Mechanical Properties
| Yield Strength | 1001.0 MPa |
| Elongation | 21.9% |
| Hardness (Brinell) | 233.0 HB |
| Hardness (Rockwell) |
Physical Properties
| Density | 6.800 g/cm³ |
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Hf | 1,0 |
| Sc | 1,0 |
| Ti | 1,0 |
| Zr | 1,0 |
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Description
This medium-entropy alloy (MEA) with nominal composition Hf1 Sc1 Ti1 Zr1 is a predominantly face-centered cubic (FCC) austenitic alloy system within the multi-principal element alloy research space, incorporating hafnium, scandium, 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.