Phase formation of Cu50−xCoxZr50 (x=0–20at.%) alloys: Influence of cooling rate

•Pseudo-binary (Cu,Co)Zr phase diagram.•Stable and metastable phases of Cu–Co–Zr alloys.•Martensitic transformation. The dependence of phase formation on quenching rate and the thermodynamical stability of Cu50−xCoxZr50 (x=0–20) was investigated. It was found that cobalt decreases the glass forming...

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Bibliographic Details
Published in:Journal of alloys and compounds 2014-03, Vol.590, p.428-434
Main Authors: Javid, F.A., Mattern, N., Samadi Khoshkhoo, M., Stoica, M., Pauly, S., Eckert, J.
Format: Article
Language:English
Subjects:
Alloys
Amorphous materials
Cobalt
Condensed matter: structure, mechanical and thermal properties
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
Glass
Glass transitions
Martensitic transformation
Martensitic transformations
Melt spinning
Metallic glass
Phase diagrams
Phase formation
Physics
Ribbons
Specific phase transitions
Thermal stability
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Summary:•Pseudo-binary (Cu,Co)Zr phase diagram.•Stable and metastable phases of Cu–Co–Zr alloys.•Martensitic transformation. The dependence of phase formation on quenching rate and the thermodynamical stability of Cu50−xCoxZr50 (x=0–20) was investigated. It was found that cobalt decreases the glass forming ability of the alloys and changes the crystalline products of the system from Cu10Zr7+CuZr2 to a (Cu,Co)Zr phase with a B2 structure. The results indicate that for the melt-spun ribbons with at least 5at.% Co, the glass crystallizes directly into B2 (Cu,Co)Zr, while in the case of bulk specimens, compositions with 0⩽x
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2013.12.138