The Isothermal Section of the Cu-rich Cu-Be-Cr (

The isothermal section of the phase diagram of the Cu-Be-Cr (≤50 at.% Be) ternary system at 500 °C has been investigated by X-ray powder diffraction. The isothermal section consists of three single-phase regions (α-Cu, Cr and CuBe), three two-phase regions (α-Cu + Cr, Cu + CuBe and CuBe + α-Cu) and one three-phase region (α-Cu + Cr + CuBe). The maximum solubility of Be in α-Cu is about 6.6 at.%