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Experimental producing of Cu–Cr–N composite alloys and thermodynamic modeling of their phase composition
https://doi.org/10.22349/1994-6716-2018-95-3-111-122
Abstract
Composite Cu–Cr–N alloys were obtained in situ under vibration of “copper melt – chromium powder” compositions before their crystallization. Two types of alloys were prepared, where chromium powder was freely dispersed or compacted into a tablet. Atmospheric nitrogen was used as a source of chromium nitrides in the alloys. The microstructure of the alloys is represented by a copper matrix hardened with chromium particles and numerous inclusions of non-stoichiometric chromium nitrides Cr2N1–x. Thermodynamic modeling showed that the composition and quantities of chromium nitrides in the Cu–Cr–N alloy depend on the partial pressure of nitrogen above the melt.
Keywords
composite alloy,
copper,
chromium,
chromium nitrides,
in situ synthesis,
vibration,
thermodynamic modeling
Supporting agencies: Research was carried out in the framework of the Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences (IMET UrO RAN) state assignment by subject No 0396-2015-0078 using CCU “Ural-M” equipment.
About the Authors
S. Yu. Melchakov
Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences (IMET UrO RAN)
Russian Federation
Russian Federation
Cand Sc. (Chem)
101, Amundsen St, 620016 Ekaterinburg
L. E. Bodrova
Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences (IMET UrO RAN)
Russian Federation
Russian Federation
Cand Sc. (Chem)
101, Amundsen St, 620016 Ekaterinburg
E. Yu. Goyda
Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences (IMET UrO RAN)
Russian Federation
Russian Federation
Dr. Sc. (Chem)
101, Amundsen St, 620016 Ekaterinburg
A. B. Shubin
Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences (IMET UrO RAN)
Russian Federation
101, Amundsen St, 620016 Ekaterinburg
Russian Federation
101, Amundsen St, 620016 Ekaterinburg
P. A. Somov
“TESKAN”
Russian Federation
Russian Federation
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Review
For citations:
Melchakov S.Yu., Bodrova L.E., Goyda E.Yu., Shubin A.B., Somov P.A. Experimental producing of Cu–Cr–N composite alloys and thermodynamic modeling of their phase composition. Voprosy Materialovedeniya. 2018;(3(95)):111-122. (In Russ.) https://doi.org/10.22349/1994-6716-2018-95-3-111-122
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