... consisting
of two sublattices: an FCC sublattice of O
2–
ions and a sublattice of Al
3+
ions occupying two thirds of the octahedral sites in the first one.
α-Fe
Allotropic form of iron having ... stability of α-phase and thereby raising the β/(α + β)
transus in the corresponding phase diagram. In physical metallurgy of
steels, it is referred to as ferrite-stabilizer.
α-Ti...
... result of the preferential arrange
-
ment of precipitates at subboundaries (see heterogeneous nucleation),
which inhibits their migration (see particle drag). Because of this, an
increase of the ... of the elastic strain
energy associated with lattice defects, which might contribute to the for
-
mation of recrystallization nuclei. Continuous recrystallization is
observed in m...
... structure
One of the two most densely packed crys-
tal structures (see Figure F .1) with coordination number 12 , atomic pack
-
ing factor 0.74, and the close-packed planes {11 1} and close-packed ... close-packed
directions 11 0〉. The radius of tetrahedral void equals 0.225R and that
of octahedral void is 0. 415 R, where R is the atomic radius. In a densely
packed structure, the a...
... between the number of components, C, the
number of phases, P, and the number of degrees of freedom, F, in some
equilibrium thermodynamic system:
F = C – P + 2
in the case of varying temperature ... independently. In the case
of the arbitrarily chosen temperature, the compositions of the phases are
fixed, and in the case of the arbitrarily chosen composition of one of th...
...
Manifestation of the difference in diffusion rates of the
atoms of different components in the case of vacancy mechanism, i.e.,
in substitutional solid solutions. An annealing of a sample made of two ... liquation.
FIGURE M .1
Occurrence of macrosegration in alloy X in the course of solidification. Points
s
1
, s
2
, and s
3 sh
ow compositions of the ingot parts soli...
... were present in such a particle, the particle’s
free energy would be increased. In the particle, the energy of the magnetic
poles at its surface is the lowest in the case of the largest pole spacing. ... boundaries
can be found.
single-domain particle
Magnetic particle whose minimum linear size is smaller
than the domain wall thickness; because of this, it consists of one magnetic...