Structural and Phase Transformations in Alloys during Spark Plasma Sintering of Ti + 23.5 at % Al + 21 at % Nb Powder Mixtures

Structural and Phase Transformations in Alloys during Spark Plasma Sintering of Ti + 23.5 at % Al + 21 at % Nb Powder Mixtures Full article

Journal

Inorganic Materials
ISSN: 0020-1685

Output data

Year: 2018, Volume: 54, Number: 1, Pages: 37-41 Pages count : 5 DOI: 10.1134/s0020168518010053

Tags

intermetallic compound; microstructure; spark plasma sintering; titanium aluminide

Authors

Karakozov B.K. ¹ , Skakov M.K. ¹ , Kurbanbekov Sh.R. ¹ , Baklanov V.V. ¹ , Sitnikov A.A. ² , Dudina D.V. ^3,4,5 , Maly V.I. ³ , Yakovlev V.I. ²

Affiliations

1	Institute of Atomic Energy, National Nuclear Center of the Republic of Kazakhstan
2	Polzunov State Technical University
3	Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences
4	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences
5	Novosibirsk State Technical University

We have studied the effect of sintering temperature on the structural and phase transformations of alloys produced by the spark plasma sintering of Ti + 23.5 at % Al + 21 at % Nb powder mixtures at temperatures in the range 1100–1550°C. The sintered alloys have been characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy (elemental X-ray mapping). The alloys sintered at temperatures of 1100 and 1200°C have been shown to have a nonuniform microstructure. According to electron microscopy results, the alloys consist of grains of the α2 and Nb2Al phases and small precipitates of the O-phase (intermetallic compound Ti2AlNb). In addition, there are particles of unreacted niobium and titanium. The alloys sintered at a temperature of 1300°C have a uniform lamellar structure.

Karakozov B.K. , Skakov M.K. , Kurbanbekov S.R. , Baklanov V.V. , Sitnikov A.A. , Dudina D.V. , Maly V.I. , Yakovlev V.I.
Structural and Phase Transformations in Alloys during Spark Plasma Sintering of Ti + 23.5 at % Al + 21 at % Nb Powder Mixtures
Inorganic Materials. 2018. V.54. N1. P.37-41. DOI: 10.1134/s0020168518010053 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000426764600007
Scopus:	2-s2.0-85042850703
Elibrary:	35496748
OpenAlex:	W2794266731

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Scopus	6
OpenAlex	7
Elibrary	8
Web of science	5