YAlSi is an intermetallic compound combining yttrium, aluminum, and silicon, belonging to the family of rare-earth transition-metal aluminides. This material is primarily of research interest for high-temperature structural applications, where its combination of low density and ceramic-like stiffness offers potential advantages over conventional superalloys. YAlSi and related ternary intermetallics are being investigated for aerospace propulsion systems and advanced power generation where operating temperatures and weight reduction are critical design drivers, though commercial deployment remains limited compared to established nickel-based superalloys.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 88.44 | GPa | — | ||
| ↳ | 88.44 | GPa | — | ||
| ↳ | 86.71 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.2447 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν)2 entries | 0.2137 | - | — | ||
| ↳ | 0.2100 | - | — | ||
Shear Modulus(G)3 entries | 62.58 | GPa | — | ||
| ↳ | 62.58 | GPa | — | ||
| ↳ | 62.85 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.005 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 9.260 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.6433 | eV/atom | — |