Effect of REE on the Solidification of Hypereutectic Silumin

The theories and mechanisms that explain the processes of modification of primary silicon in hypereutectic silumins are considered. The solidification of a hypereutectic silumin containing a rare earth element (REE), namely, yttrium, ytterbium, samarium, erbium, lanthanum, or neodymium, is studied....

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Published inRussian metallurgy Metally Vol. 2023; no. 9; pp. 1233 - 1241
Main Authors Petrov, I. A., Berezhnoi, D. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2023
Springer Nature B.V
Subjects
Cerium
Chemistry and Materials Science
Lanthanum
Materials Science
Metallic Materials
Neodymium
Parameter modification
Phase transitions
Rare earth elements
Samarium
Silicon
Solid phases
Solidification
Transformation temperature
Ytterbium
Yttrium
primary silicon
hypereutectic silumin
rare earth element (REE)
modification
solidification
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Summary:The theories and mechanisms that explain the processes of modification of primary silicon in hypereutectic silumins are considered. The solidification of a hypereutectic silumin containing a rare earth element (REE), namely, yttrium, ytterbium, samarium, erbium, lanthanum, or neodymium, is studied. The phase transformation temperatures and the parameters that take into account the precipitation of a solid phase in the solidification temperature range are determined. Differences in the solidification parameters and the character of solid-phase precipitation in alloys modified by yttrium, ytterbium, samarium, erbium, cerium, or neodymium are revealed. Further investigations should be performed to clarify the mechanism of the REM modification of primary silicon in hypereutectic silumins.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029523090100