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NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2014, 5 (4), P. 603-612

INTRODUCTION OF SCANDIUM, ZIRCONIUM AND HAFNIUM INTO ALUMINUM ALLOYS. DISPERSION HARDENING OF INTERMETALLIC COMPOUNDS WITH NANODIMENSIONAL PARTICLES

V. M. Skachkov – Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Science, Ekaterinburg, Russia
L. A. Pasechnik – Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Science, Ekaterinburg, Russia
S.P. Yatsenko – Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Science, Ekaterinburg, Russia; Yatsenko@ihim.uran.ru

The state of intermetallic compounds Al3Sc, Al3Zr, Al3Hf and slag shots introduced by high-temperature exchange reactions of corresponding fluoride-chloride salts with liquid aluminum has been studied. The particle size and segregation direction during centrifugation and fi ltration of melt have been examined by microscopy and local X-ray analysis methods. The dispersoids formed during decomposition of solid solution are strong phase reinforcers.

Keywords: Aluminum, scandium, zirconium, hafnium, alloy, intermetallic compounds (IMC), slag, inclusions, microstructure.

PACS 61.66.Dk

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