Production of a sintered alloy based on the TiAl intermetallic compound. Part 1: Calcium-hydride fabrication technology of the Ti–47Al–2Nb–2Cr powder alloy and its properties

Alloy powder of the Ti–47Al–2Nb–2Cr composition (at %) with a structure of TiAl (60 wt %) and Ti 3 Al (40 wt %) is prepared by the calcium-hydride method. The mode of calcium-hydride synthesis is optimized for the Ti–50Al (at %) model alloy. It is established that the reduction temperature should be...

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Published inRussian journal of non-ferrous metals Vol. 56; no. 5; pp. 548 - 554
Main Authors Kasimtsev, A. V., Yudin, S. N., Sviridova, T. A., Malyarov, A. V., Zaitsev, A. A., Sentyurina, Zh. A., Kaplanskii, Yu. Yu, Pogozhev, Yu. S., Levashov, E. A.
Format Journal Article
LanguageEnglish
Published New York Allerton Press 01.09.2015
Subjects
Chemistry and Materials Science
Materials Science
Metallic Materials
Powder Materials and Coatings
calcium-hydride method
intermetallic compounds
powder
properties
preparation
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Summary:Alloy powder of the Ti–47Al–2Nb–2Cr composition (at %) with a structure of TiAl (60 wt %) and Ti 3 Al (40 wt %) is prepared by the calcium-hydride method. The mode of calcium-hydride synthesis is optimized for the Ti–50Al (at %) model alloy. It is established that the reduction temperature should be no lower than 1100°C, while the excess of the CaH 2 reducing agent should be no lower than 15 wt %. The main physicochemical and manufacturing properties of the synthesized Ti–47Al–2Nb–2Cr powder alloy, which provide the formation of dense compact items during its subsequent consolidation processes, are determined using modern analytical methods.
ISSN:1067-8212
1934-970X
DOI:10.3103/S1067821215050065