Al2Cu is an intermetallic compound formed between aluminum and copper, representing a distinct phase that can appear in aluminum-copper alloys and cast structures. This brittle ceramic-like phase is primarily encountered as a constituent in aluminum alloy microstructures rather than as a standalone engineering material, where it forms during solidification and heat treatment of aerospace and automotive aluminum alloys. Engineers typically work to manage or control Al2Cu precipitation rather than exploit it directly, as its presence affects alloy strength, ductility, and corrosion resistance; however, understanding its formation and properties is critical for optimizing heat-treated aluminum alloys used in demanding structural applications.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 90.12 | GPa | — | ||
| ↳ | 99.38 | GPa | — | ||
| ↳ | 93.82 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.5265 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν)2 entries | 0.2667 | - | — | ||
| ↳ | 0.3200 | - | — | ||
Shear Modulus(G)3 entries | 49.79 | GPa | — | ||
| ↳ | 40.21 | GPa | — | ||
| ↳ | 39.99 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.310 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 0.000 | eV | — | ||
| ↳ | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 4.347 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.06860 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.1657 | eV/atom | — |