On production of Cu–Pb alloys by liquid metal homogenization
https://doi.org/10.17073/0021-3438-2016-4-76-82
Abstract
The study covers the microstructure of Cu–Pb alloys containing 7, 32, 50, 55 and 73 at.% Pb preliminary superheated in their liquid state to 1300 °C and crystallized at a cooling rate of 10 °C/sec. It was demonstrated that melt overheating resulted in complete or partial suppression of metal separation and formation of its more uniform structure that serve as an indirect evidence of changes in the structural state of metallic liquid. The application of homogenizing heat treatment of Cu–Pb melts by superheating to a temperature specific for each compound as a method to obtain massive ingots with a homogeneous structure was justified. It was demonstrated that Cu–50 at.% Pb alloy characterized by the highest value of mixing entropy is the most promising composition for massive ingot production by homogenizing heat treatment of a melt. The minimum micro-hardness difference of phases based on copper and lead for Cu–50 at.% Pb alloy determined material ability to withstand mechanical loads without residual deformation and failure, as well as its resistance to various types of wear.
Keywords
About the Authors
O. A. Chikova
Ural Federal University named after the first Russian President Boris Yeltsin (UrFU)
Russian Federation
Russian Federation
Dr. Sci. (Phys.-Math.), Prof., Department of physics,
620002, Ekaterinburg, Mira str., 19
G. V. Sakun
Ural Federal University named after the first Russian President Boris Yeltsin (UrFU)
Russian Federation
Cand. Sci. (Phys.-Math.), Associate Professor, Department of physics
Russian Federation
Cand. Sci. (Phys.-Math.), Associate Professor, Department of physics
V. S. Tsepelev
Ural Federal University named after the first Russian President Boris Yeltsin (UrFU)
Russian Federation
Dr. Sci. (Tech.),, Director of Research center of the Institute of physics of metal liquids
Russian Federation
Dr. Sci. (Tech.),, Director of Research center of the Institute of physics of metal liquids
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Review
For citations:
Chikova O.A., Sakun G.V., Tsepelev V.S. On production of Cu–Pb alloys by liquid metal homogenization. Izvestiya. Non-Ferrous Metallurgy. 2016;(4):76-82. (In Russ.) https://doi.org/10.17073/0021-3438-2016-4-76-82
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