HYDROGEN IN COMPOUNDS AND ALLOYS WITH A15 STRUCTURE
Zolotarenko A.D. Zolotarenko O.D. Matysina Z.A. Shvachko N.A. Akhanova N.Y. Ualkhanova M. Schur D.V. Gabdullin M.T. Kartel M.T. Solonin Y.M. Zhirko Y.I. Ismailov D.V. Zolotarenko A.D. Zagorulko I.V.
October-December 2023G.V. Kurdyumov Institute for Metal Physics of N.A.S. of Ukraine
Progress in Physics of Metals
2023#24Issue 4654 - 685 pp.
In the present work, a theoretical study of atomic ordering in the A3 BCx alloy is carried out. The mutual influence of the ordering and solubility of impurity C in the A3 B alloy is studied. The dependences of solubility on the composition of the alloy, temperature, degree of long-range order are found and studied. In addition, the criteria for the manifestation of extremity in the concentration and temperature dependences of solubility are obtained. The atomic ordering is studied using the average-energies’ method; the features of the C impurity solubility in the A3 B alloy are elucidated using the configuration method. Experiments confirming the results of the theory are currently unknown to authors. However, the available experimental data on determining the temperatures of martensitic transformation (Tm) and superconducting transition (Tc) for the Nb3 SnHx alloy allow us to hope and assert a possible agreement between the data of theory and experiment.
A15-type structure , alloys , compounds , crystal structure , hydrogen , metal hydrides , order–disorder transitions , phase transformations , solubility
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I.M. Frantsevych Institute for Problems of Materials Science of the N.A.S. of Ukraine, Omeljan Pritsak Str, Kyiv, UA-03142, Ukraine
O.O. Chuiko Institute of Surface Chemistry of the N.A.S. of Ukraine, 17 General Naumov Str., Kyiv, UA-03164, Ukraine
Kyiv National University of Construction and Architecture, 31 Povitroflotskyi Ave, Kyiv, UA-03037, Ukraine
Kazakh–British Technical University, 59 Tole bi Str, Almaty, 050000, Kazakhstan
Al-Farabi Kazakh National University, 71 Al-Farabi Ave, Almaty, 050040, Kazakhstan
Institute of Applied Physics of the N.A.S. of Ukraine, 58 Petropavlivska Str, Sumy, UA-40000, Ukraine
NJSC ‘K.I. Satbayev Kazakh National Research Technical University’, 22a Satbaev Str, Almaty, 050013, Kazakhstan
G.V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine, 36 Academician Vernadsky Blvd, Kyiv, UA-03142, Ukraine
I.M. Frantsevych Institute for Problems of Materials Science of the N.A.S. of Ukraine
O.O. Chuiko Institute of Surface Chemistry of the N.A.S. of Ukraine
Kyiv National University of Construction and Architecture
Kazakh–British Technical University
Al-Farabi Kazakh National University
Institute of Applied Physics of the N.A.S. of Ukraine
NJSC ‘K.I. Satbayev Kazakh National Research Technical University’
G.V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine
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