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Licensed Unlicensed Requires Authentication Published by De Gruyter February 23, 2021

Changes in the microstructural state of Ti-Al-Nb-based alloys depending on the temperature cycle during spark plasma sintering

Yernat Kozhakhmetov, Mazhyn Skakov, Nuriya Mukhamedova, Sherzod Kurbanbekov, Sherzod Ramankulov and Wojciech Wieleba
From the journal Materials Testing


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.

Yernat A. Kozhakhmetov D. Serikbayev EKSTU Ust-Kamenogorsk Kazakhstan


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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Published Online: 2021-02-23

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