The
practical
application
of
micro-alloying
Zn-Mg
alloys
is
limited
due
to
their
poor
mechanical
properties
and
evident
strain
softening
behavior.
Therefore,
this
paper
proposed
the
utilization
ECAP
plus
rolling
processing
as
an
innovative
approach
potentially
address
these
limitations.
Herein,
effects
on
microstructures,
behavior
were
investigated.
It
was
found
that
grain
refinement
achieved
through
1-pass
8-pass
differed
significantly,
subsequent
can
further
regulate
size
dislocation
distribution.
cold
(1p-CR),
hot-cold
(1p-HC),
(8p-HC)
processed
exhibited
heterostructure
characterized
by
fine
grains
encircling
coarse
grains.
Additionally,
regions
with
high
density
dislocations
uniformly
distributed
alongside
low
dislocations.
This
unique
microstructure
promoted
accumulation
interaction
during
deformation,
resulting
in
inhibition
while
maintaining
strength
elongation.
1p-CR,
1p-HC,
8p-HC
demonstrated
excellent
formability
stability
meeting
required
for
implant
materials,
which
highlight
significant
potential
applications.
Bioactive Materials,
Journal Year:
2024,
Volume and Issue:
41, P. 312 - 335
Published: July 26, 2024
Zinc
(Zn)-based
biodegradable
metals
(BMs)
fabricated
through
conventional
manufacturing
methods
exhibit
adequate
mechanical
strength,
moderate
degradation
behavior,
acceptable
biocompatibility,
and
bioactive
functions.
Consequently,
they
are
recognized
as
a
new
generation
of
show
promise
in
several
applications.
However,
processes
face
formidable
limitations
for
the
fabrication
customized
implants,
such
porous
scaffolds
tissue
engineering,
which
future
direction
towards
precise
medicine.
As
metal
additive
technology,
laser
powder
bed
fusion
(L-PBF)
has
advantages
design
freedom
formation
precision
by
using
fine
particles
to
reliably
fabricate
metallic
implants
with
structures
according
patient-specific
needs.
The
combination
Zn-based
BMs
L-PBF
become
prominent
research
focus
fields
biomaterials
well
biofabrication.
Substantial
progresses
have
been
made
this
interdisciplinary
field
recently.
This
work
reviewed
current
status
manufactured
L-PBF,
covering
critical
issues
including
particles,
structure
design,
processing
optimization,
chemical
compositions,
surface
modification,
microstructure,
properties,
behaviors,
functions,
meanwhile
clarified
influence
mechanism
particle
composition,
modification
on
performance
BM
implants.
Eventually,
it
was
closed
perspectives
BMs,
putting
forward
based
state-of-the-art
development
practical
clinical
Corrosion Communications,
Journal Year:
2024,
Volume and Issue:
18, P. 1 - 18
Published: June 5, 2024
In
this
work,
the
effects
of
various
rolling
deformations
on
microstructural
evolution,
mechanical
properties,
corrosion
behavior,
and
cytocompatibility
Zn-0.5Mn
alloys
were
studied.
When
deformation
is
85%,
microstructure
alloy
becomes
dendritic
after
repeated
heating.
Besides
distribution
at
grain
boundary,
MnZn13
started
to
be
distributed
in
intracrystalline.
Meanwhile,
properties
reached
best.
Its
behavior
under
was
characterized
by
electrochemical
immersion
tests.
Results
show
that
with
85%
has
a
slower
rate
early
stage
faster
later
stage.
Cytocompatibility
results
high
concentration
rolled
extract
slight
toxicity
MC3T3-E1
cells.
After
dilution,
shows
best
cytocompatibility.
Journal of Materials Research and Technology,
Journal Year:
2024,
Volume and Issue:
29, P. 170 - 180
Published: Jan. 21, 2024
Micro-alloyed
Zn–Mg
alloys
have
attracted
extensive
attention
in
the
field
of
medical
implant
due
to
their
excellent
biosafety
and
moderate
degradation
rate.
The
low
Mg
content
could
compromise
improvement
strength,
therefore,
appropriate
rolling
process
was
investigated
enchance
strength
inhibit
strain
softening
behavior
Zn-0.06
alloy.
observed
changes
microstructures,
mechanical
properties,
as-cast
alloy
after
three
different
processing
were
consistent
with
those
exhibited
by
solid-solution
cold
rolled
showed
small
average
grain
size
high
initial
dislocation
density,
however,
they
also
noticeable
behavior.
Hot
can
result
coarsening
grains,
reduction
density
introducing
a
large
number
twins,
which
inhibited
but
leaded
decrease
compared
rolling.
hot-cold
induce
formation
heterostructure,
wherein
coarse
grains
encircled
fine
while
regions
uniformly
distributed,
effectively
on
basis
maintaining
good
properties.
Materials,
Journal Year:
2024,
Volume and Issue:
17(17), P. 4309 - 4309
Published: Aug. 30, 2024
Zinc,
along
with
magnesium
and
iron,
is
considered
one
of
the
most
promising
biodegradable
metals.
Compared
pure
Zn
exhibits
poor
mechanical
properties,
despite
its
mild
biological
corrosion
behavior
beneficial
biocompatibility.
Laser
powder
bed
fusion
(LPBF),
unlike
traditional
manufacturing
techniques,
has
capability
to
rapidly
manufacture
near-net-shape
components.
At
present,
although
combination
LPBF
made
great
progress,
it
still
in
infancy.
Element
loss
porosity
are
common
processing
problems
for
Zn,
mainly
due
evaporation
during
melting
under
a
high-energy
beam.
The
formation
quality
properties
final
material
closely
related
alloy
composition,
design
processing.
This
work
reviews
state
research
future
perspective
on
zinc
from
comprehensive
assessments
such
as
characteristics,
processing,
quality,
microstructure,
properties.
effects
process
parameters
introduced.
mechanical,
corrosion,
biocompatibility
their
test
methodologies
microstructure
analyzed
detail.
practical
medical
application
Finally,
current
status
summarized
together
suggested
directions
advancing
knowledge
about
Zn.
Journal of Materials Research and Technology,
Journal Year:
2023,
Volume and Issue:
26, P. 1584 - 1595
Published: Aug. 6, 2023
Ag-Cu
alloys,
as
one
type
of
typical
eutectic
solders,
have
been
widely
used
in
microelectronic
packaging.
The
welding
performance
solders
is
closely
associated
with
their
microstructures.
However,
the
microstructure
evolution
alloys
during
solidification
still
poorly
understood.
In
this
work,
a
new
melt
fluxing
technique
was
proposed
to
investigate
undercooled
Ag-50at.%Cu
hypereutectic
alloy.
maximum
undercooling
alloy
can
reach
up
135
K.
obtained
results
show
that
microstructures
consist
primary
dendrite
and
lamellar
at
low
(ΔT
∼
10
K).
With
increase
undercooling,
dendrites
undergo
refining
<
65
K)
then
disappear
completely
=
78
appear
again
119
It
also
discovered
cellular
eutectics
formed
ΔT
within
range
K
Unexpectedly,
irregular
are
observed
when
>
Theoretical
calculation
indicate
formation
dendritic
fragmentation
coarsening
under
larger
These
not
only
elucidate
relationship
between
Ag-50at.
%Cu
but
has
positive
significance
for
other
hyper-eutectic
systems.
