Changes in the microstructural state of Ti-Al-Nb-based alloys depending on the temperature cycle during spark plasma sintering
Kozhakhmetov Y. Skakov M. Mukhamedova N. Kurbanbekov S. Ramankulov S. Wieleba W.
Febuary 2021Walter de Gruyter GmbH
Materialpruefung/Materials Testing
2021#63Issue 2119 - 123 pp.
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 B2+O structure which is more suitable for strengthening sorption properties of hydrogen-storing materials based on Ti-Al-Nb.
Mechanoactivation , Microstructure , SPS , Ti-Al-Nb-based system , X-ray phase analysis
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L. N.Gumilyov Eurasian National University, Nur-Sultan, Kazakhstan
National Nuclear Center, Republic of Kazakhstan Republican State Enterprise, Kurchatov, Kazakhstan
D. Serikbaev East Kazakhstan State Technical University, Ust-Kamenogorsk, Kazakhstan
Department of Machine Design and Tribology, University of Science and Technology in Wroclaw, Wroclaw, Poland
Shakarim State University, Semey, Kazakhstan
Khoja Akhmet Yassawi International, Kazakh-Turkish University, Department of Physics, Faculty of Natural Sciences, Kazakhstan
L. N.Gumilyov Eurasian National University
National Nuclear Center
D. Serikbaev East Kazakhstan State Technical University
Department of Machine Design and Tribology
Shakarim State University
Khoja Akhmet Yassawi International
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