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N. V. Kazennov, K. B. Kalmykov, S. F. Dunaev, N. L. Zvereva, N. E. Dmitrieva
Phasesaand b of the Al–Mn–Si
System
Abstract
The fields of homogeneity and the crystal structures of
threefold a
and b
phases on the basis of Al9Mn2Si and Al9Mn3Si at 823 K were investigated by methods of
scanning electronic microscopy, X-ray and electron probe microanalysis. It was
established that the a phase is formed in the field 7,4–15,9 at. % Si at manganese concentration ~18 aт. %. The bphase has area of homogeneity
from 3,7 to 18,5 at. % Si and settles
down in parallel Al–Si side at concentration of manganese 24–26 at. %. The fragment of isothermal
section of the Al–Mn–Si system in the field of the alloys rich with aluminum
was constructed.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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