Abstract
This article presents results of the study on the dependence of the structural-phase state of alloys based on Ti-12.52Al-43.08Nb system (wt.-%) on the temperature of spark plasma sintering. It has been established that spark plasma sintering of Ti-Al-Nb alloys under the temperature of 1500 °C resulted in melting the aluminum component of the mixture that, in turn, negatively affects the quality of ready products. It has also been shown that stepping up the sintering temperature from 1000 °C to 1300 °C leads to increasing volume fraction of O-phase up to 49.63 % due to rapid precipitation of O-phase from B2-phase and Ti3Al-phase. It has been revealed that intermetallic composites obtained under the temperature of 1300 °C are characterized by a dominant two-phase В2+О structure which is more suitable for strengthening sorption properties of hydrogen-storing materials based on Ti-Al-Nb.
About the authors
Yernat Kozhahmetov, born in 1990, studied physics and material science at L. N.Gumilyov Eurasian National University, Nur-Sultan, Kazakhstan (from 2008 to 2012). His research interest is focused on physics, materials science, severe accidents at NPP and hydrogen energy. Currently, he is a 2-year doctoral student (PhD) in the special field of “Technical Physics” at the East Kazakhstan State technical University. D. Serikbayeva, Ust-Kamenogorsk, Kazakhstan.
Prof. Dr. Mazhyn Skakov, born in 1952, studied physics of condensed state, radiation physics of solid body and reactor material testing at Tomsk Polytechnic Institute, Russia (from 1996 to 1975). He chaired the Research Institute of Nanotechnology and New Materials, prepared nine candidates of sciences and more than ten doctors of sciences in technical physics (from 2008 to 2018). At the moment, he is main research fellow at the National Nuclear Center of the Republic of Kazakhstan Republican State Enterprise, Kurchatov, Kazakhstan.
Nuriya Mukhamedova, born in 1990, studied technical physics in the training trajectory of nuclear reactors and power plants at Shakarim State University, Semey, Kazakhstan (from 2008 to 2014). At the moment, she is a doctoral candidate in the special field of “Technical Physics”, as well as a junior researcher in the laboratory for testing fuel and structural materials in the Institute of Atomic Energy Branch of the Republican State Enterprise National Nuclear Center of the Republic of Kazakhstan in Kurchatov.
Associate Prof. Dr. Sherzod Kurbanbekov, born in 1988, studied physics and mechanical properties of steel resulting from thermal treatment at D. Serikbaev East Kazakhstan State Technical University, Ust-Kamenogorsk, Kazakhstan (from 2011 to 2013). During his time at university, he worked as a scientific assistant. His research is focused on the physics of condensed state, plasma technology and alternative energy forms. He is currently an Associate Professor of the Khoja Akhmet Yassawi International Kazakh-Turkish University, department of physics.
Associate Prof. Dr. Sherzod Ramankulov, born in 1988, works at Khoja Akhmet Yassawi International Kazakh-Turkish University, Department of Physics, Faculty of Natural Sciences. His research interests include the research of physical characteristics of solar energy converters into electric energy and methods of teaching optics and nuclear physics.
Prof. Wojciech Wieleba was born in 1959. His area of interest is research related to the issues of friction and wear of new polymer materials during friction of machine parts. Currently, he holds the position of head of the Department of Machine Design and Tribology at the University of Science and Technology in Wroclaw, Wroclaw, Poland.
Acknowledgement
The work has been implemented within the framework of the scientific and technical program “Development of nuclear energy in the Republic of Kazakhstan for 2018-2020” on the topic of “Study of advanced materials based on Ti-Al-Nb system for hydrogen storage and transportation”.
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