MPEA Hf1 Nb1 Ta1 Ti1
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Семейство: High-Entropy Alloy (MPEA)
High-entropy alloy. Phase: BCC. Processing: ANNEAL.
Рейтинги характеристик
Performance Radar
| Свойство | Rating |
|---|---|
| Strength | 6 / 10 |
| Corrosion Res. | 5 / 10 |
| Lightweight | 3 / 10 |
| Machinability | 4 / 10 |
| Affordability | 5 / 10 |
| Heat Res. | 5 / 10 |
Состав
Механические свойства
| Предел текучести | 722.0 MPa |
| Твёрдость (по Бринеллю) | 275.0 HB |
| Твёрдость (по Роквеллу) | |
| Модуль упругости | 119.0 GPa |
Физические свойства
| Плотность | 10.900 g/cm³ |
Химический состав
| Элемент | Процентное содержание (%) |
|---|---|
| Hf | 1,0 |
| Nb | 1,0 |
| Ta | 1,0 |
| Ti | 1,0 |
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Описание
This medium-entropy alloy (MEA) with nominal composition Hf1 Nb1 Ta1 Ti1 is a predominantly face-centered cubic (FCC) austenitic alloy system within the multi-principal element alloy research space, incorporating hafnium, niobium, tantalum, and titanium. 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.