Metals,
Journal Year:
2024,
Volume and Issue:
14(11), P. 1252 - 1252
Published: Nov. 4, 2024
The
effects
of
the
composite
addition
La
and
Sm
elements
on
microstructural
evolution,
mechanical
properties,
electrochemical
behaviors
Mg-3Zn-1Mn/Sn-0.5Ca
(wt.%)
alloys
are
systematically
investigated.
findings
reveal
that
Mg-3Zn-1Mn-0.5Ca
alloy
exhibits
excellent
ductility,
achieving
26%
elongation,
whereas
Mg-3Zn-1Sn-0.5Ca
demonstrates
good
comprehensive
properties.
results
in
a
degree
grain
refinement
both
significantly
bolsters
strength
alloy,
but
it
has
less
pronounced
effect
properties
alloy.
Furthermore,
La-Sm
improves
corrosion
resistance
alloys.
Electrochemical
impedance
spectroscopy
(EIS)
analysis
reveals
all
four
form
double-capacitance
loop
morphology
3.5%
NaCl,
indicating
formation
protective
film
during
process.
Among
them,
Mg-3Zn-1Mn-0.5Ca-1La-0.5Sm
largest
capacitance
radius,
which
is
consistent
with
its
polarization
curve,
best
resistance.
At
potential
−1.382V,
current
8.97
μA·cm−2.
Materials,
Journal Year:
2025,
Volume and Issue:
18(1), P. 196 - 196
Published: Jan. 5, 2025
This
study
presents
a
comparative
analysis
of
the
influence
Ce-Gd
and
Gd-Y
additions
on
microstructural
evolution,
mechanical
properties,
electrochemical
behavior
extruded
Mg-3Zn-Mn-Ca
alloy
rods.
Despite
frequent
incorporation
Gd,
Y,
Ce
as
alloying
elements
in
magnesium
alloys,
systematic
examination
their
combined
effects
Mg-Zn
alloys
has
been
limited.
Our
findings
reveal
that
both
Gd-Ce
significantly
enhance
properties
alloy,
although
through
differing
mechanisms.
Specifically,
Mg-3Zn-1Mn-0.5Ca-1Gd-0.5Ce(ZMXE3101(GdCe))
exhibited
yield
strength
304.5
MPa
an
elongation
15%,
achieved
dynamic
recrystallization
enhanced
basal
texture.
The
grain
refinement
texture
strengthening
resulting
from
coarse
second-phase
particles
formed
by
played
significant
role
increasing
strength.
In
contrast,
Mg-3Zn-1Mn-0.5Ca-1Gd-0.5Y
(ZMXE3101(GdY))
demonstrated
305
20%.
finer
grains
elongated
unrecrystallized
contributed
to
elevation
While
ductility
this
was
slightly
lower
than
without
rare
earth
additions,
it
still
commendable
overall
properties.
test
results
indicate
addition
enhances
corrosion
current
density
attributable
generation
numerous
phase
function
cathodes.
Compared
ZMXE3101(GdY)
ZMXE3101(GdCe)
exhibits
higher
equilibrium
potential
density.
is
due
formation
protective
film
during
process
Gd-Ce.
