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.
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
In
this
work,
the
microstructure,
corrosion
resistance,
and
discharge
performance
of
two
hot-extruded
Mg
alloys
with
different
lithium
contents
were
thoroughly
investigated.
Advanced Engineering Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 9, 2025
High‐strength
Mg–9Al–1Cu
alloy
is
used
as
a
soluble
plugging
material
for
multistage
fracturing,
and
the
effect
of
hot
extrusion
on
its
corrosion
behavior
analyzed.
As‐cast
(AC)
consists
α‐Mg,
Mg
17
Al
12
,
MgAlCu
phases.
After
extrusion,
grains
are
obviously
refined
average
size
reduced
from
90.67
to
3.75
μm,
coarse
phases
broken
distributed
at
grain
boundaries,
orientation
changes
random
state
obvious
{100}
texture.
The
forms
both
AC
as‐extruded
alloys
mainly
pitting
corrosion,
but
reduces
rate
attributed
fine
second
located
boundaries
recrystallized
dense
oxide
film
containing
more
MgAl
2
O
4
compound.
Metals,
Journal Year:
2025,
Volume and Issue:
15(3), P. 321 - 321
Published: March 15, 2025
The
body-centered
cubic
(BCC)-structured
magnesium–lithium
(Mg-Li)
alloy
is
the
lightest
metal
material,
but
its
mechanical
properties
are
poor,
especially
strength.
In
this
study,
effect
of
adding
rare
earth
Y
on
microstructure
and
as-cast
BCC
Mg-11Li-6Zn-xY
(x
=
0,
0.5,
1.2,
2,
in
wt.%)
alloys
was
investigated.
results
revealed
that
massive
amounts
nano-scale
θ
(MgLiZn)
and/or
θ’
(MgLi2Zn)
precipitated
inside
grains,
some
phases
at
grain
boundaries
Mg-11Li-6Zn
alloy.
With
addition
Y,
W
formed
boundary,
their
content
gradually
increased
with
concentration,
size
decreased
simultaneously.
Mg-11Li-6Zn-0.5Y
exhibited
higher
ultimate
tensile
strength
(190
MPa)
elongation
(27%)
room
temperature
than
those
(170
MPa
22%)
alloy,
presenting
improvements
11.8%
22.7%
ductility,
respectively.
achieved
by
less
could
be
attributed
to
formation
moderate
a
reduction
size.
However,
once
became
excessive,
Mg-11Li-6Zn-1.2Y
were
reduced
due
too
many
reticular
phases.
addition,
Mg-11Li-6Zn-2Y
containing
highest
had
lowest
strength,
163
MPa,
38%,
combined
most
smallest
grains.
Furthermore,
fracture
morphology
displayed
apparent
necking,
which
insignificant
after
indicating
improve
uniform
plastic
deformation
ability.
