Common Phases for Copper Alloys

BCC metals as well as bcc intermetallic phase, such as β-Cu₃Al and β-CuZn, β-Cu_0.85Sn_0.15, β-Cu_0.85Si_0.15, and β-Cu_0.65Be_0.35

γ-Cu₃Sn (ht) and γ-Ni₃Sn (ht)

A solution phase with γ-brass structure, such as γ-Cu₉Al₄ (rt), γ-Cu₅Zn₈, and γ-Ni₅Zn₈

θ-Al₂Cu

γ-Cu₉Al₄ (ht)

HCP metals as well as the cph intermediate phase, such as ε-CuZn₄, κ-Cu_0.88Si_0.12, and ξ-Cu_0.85Ge_0.15

The cubic ordered intermetallic phase, γ-CuBe

The Cu₂Mg-type laves phase such as Cu₂Mg and Al₂Ca

Cu₂O

The Be₅Au-type intermetallic phase such as Cu₅Zr and Ni₅Zr

The CuZr₂-type intermetallic phase such as CuTi₂, CuZr₂, and AlZr₂

η-Cu₆Sn₅

η'-Cu₆Sn₅

δ-Cu₄₁Sn₁₁

ε-Cu₃Sn (rt)

ζ-Cu₁₀Sn₃

Al₄Ca

Si and Ge

Co₂Si, Ni₂Si

CoSi₂

Phosphide such as Fe₃P, Cr₃P, and Ni₃P

Phosphides such as Fe₂P, Cr₂P, and Ni₂P

Phosphides such as FeP and CrP

A high temperature Fe-Mo phase

μ phase, such as Co₆Nb₇ and Mo₆Fe₇