The Y-Zr (Yttrium-Zirconium) system

Determination of the isothermal section of the Cu–Zr–Y ternary system at 978K

“…Through EPMA, the equilibrium of binary phases can be identified and no ternary phases are found in the diffusion-triple. It is obvious that there are six layers of compounds, Cu 9 Zr 2 , Cu 8 Zr 3 , Cu 51 Zr 14 , Cu 10 Zr 7 , CuZr and CuZr 2 in the Cu-Zr side, while no layers of compounds in the Y-Zr side, which is in good agreement with binary phase diagrams of the Cu-Zr [9][10][11] and Y-Zr [1]. Actually, only three layers of compounds can be observed, i.e.…”

“…At room temperature, the solid solubility of Zr in (␣Y) is about 1.5 at.%, however, at the eutectic temperature, the solid solubility of Zr in (␤Y) is about 4.9 atom percent. The solid solubility of Y in (␤Zr) is only 0.2 atom percent at 1161 K, whereas about 1.2 atom percent in (␣Zr) at 1128 K. A peritectoid reaction takes place at 1153 K and (␤Zr) + (␣Y) transforms into (␣Zr) [1]. A number of intermediate compounds form in the Curich region of the Cu-Y binary system.…”

Solid solubility extension and microstructure evolution of cast zirconium yttrium alloy

“…3e. Figure 3f shows that the microstructure is mainly composed of laminar and fiber eutectic structure and a small amount of aZr dendritic primary phase when Y content reaches up to 57 wt% which is very close to the eutectic composition (59 wt%) [13]. Such a eutectic microstructure is in a good agreement with the work performed by Lundin and Klodt [16].…”

“…Compared with zirconium hydride, Zr-Y alloy hydride has better thermal stability [11] and mechanical properties [12]. Zr-Y system is a simple eutectic system without intermetallic [13,14]. It is reported that Zr and Y have extremely low mutual solubility at room temperature.…”

Investigation of the isothermal section of the Ag–Zr–Y ternary system at 1023K by diffusion-triple

“…The solid solubility of Zr in (␣Y) is about 1.5 at.% at room temperature and about 4.9 at.% in (␤Y) at the eutectic temperature. The solid solution of Y in (␤Zr) is only 0.2 at.% at 1161 K, whereas about 1.2 at.% in (␣Zr) at 1128 K. A peritectic reaction takes place at 1153 K and (␤Zr) transforms into (␣Zr) [1]. There are three intermediate compounds in the Ag-Y binary system, namely, Ag 51 Y 14 , Ag 2 Y and AgY, which are all congruently melting compounds.…”