Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Ноя. 30, 2024
This
study
presents
an
advanced
approach
utilizing
vacuum
distillation
(VD)
to
purify
Al
from
Al–Mg
alloys.
The
activity
coefficients
of
Al-Mg
binary
alloy
components
were
meticulously
determined
by
applying
the
molecular
interaction
volume
model
(MIVM),
non-random
two-liquid
(NRTL)
model,
and
Wilson
equation.
Comparative
analysis
between
experimental
data
calculated
enabled
selection
optimal
exhibiting
high
computational
accuracy
extensive
applicability.
NRTL
chosen
for
its
precision,
was
then
employed
compute
across
various
temperatures,
leading
development
a
vapor-liquid
equilibrium
(VLE)
diagram.
VLE
diagram
provides
robust
quantitative
foundation
assessing
purification
limits
within
temperature
range
973–1373
K
in
process.
Theoretical
analyses
underscore
that
VD
offers
rapid
efficient
method
purification.
Experimental
verification
at
kilogram
scale,
conducted
1373
120
min,
achieved
purity
level
99.9989%
with
direct
recovery
efficiency
97.98%.
Notably,
this
process
aligns
environmental
standards
sustainable
metallurgical
practices,
as
it
prevents
release
gaseous
emissions
or
effluents,
thereby
meeting
industry's
growing
demand
eco-friendly
recycling
methods.
Materials Today Communications,
Год журнала:
2024,
Номер
38, С. 108395 - 108395
Опубликована: Фев. 16, 2024
The
aerospace
industry
demands
high-performance
wear-
and
galling-resistant
alloys,
which
has
spurred
increased
attention
on
copper-based
materials.
These
materials
are
promising
for
high-temperature
applications
in
aeronautics
due
to
their
excellent
thermal
conductivity
satisfactory
strength
at
elevated
temperatures,
as
well
low-temperature
applications,
such
bearings
valves.
GRCop,
GlidCop,
CuCrZr
families
the
most
commonly
used
alloys
this
regard,
although
complex
shapes
designs
of
components
fabricated
using
these
pose
significant
fabrication
challenges.
Recent
advances
additive
manufacturing
technologies,
however,
have
enabled
production
intricate
a
reasonable
cost
time.
This
paper
reviews
technological
advancements
processes
industry,
including
relevant
issues
related
feedstock
post-printing
processes.
Additionally,
review
focuses
impact
methods
properties
as-built
parts,
discusses
certifications
standards
alloys.
Finally,
several
areas
prospective
research
studies
field
suggested.
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Год журнала:
2024,
Номер
693, С. 134085 - 134085
Опубликована: Апрель 26, 2024
This
study
explores
the
microstructure
of
AISI
316
L
stainless
steel
fabricated
by
wire
arc
additive
manufacturing
(WAAM)
and
establishes
correlations
with
its
passivity
corrosion
characteristics
in
a
0.9
wt.%
NaCl
solution,
while
making
comparisons
wrought
alloy
counterpart.
The
WAAM-fabricated
demonstrates
favorable
chemical
composition
comparison
to
alloy,
exhibiting
heterogeneous
comprised
residual
delta
ferrite
within
austenitic
matrix.
pitting
vulnerability
WAAM-printed
is
observed
be
lower
than
that
counterpart,
phenomenon
further
investigated
through
passive
film
behavior
analysis.
Mott-Schottky
analysis
point
defect
model
(PDM)
revealed
development
less
defective
layer
on
enhancing
overall
electrochemical
response,
attributed
interplay
between
microstructural
features
composition.
Journal of Materials Research and Technology,
Год журнала:
2024,
Номер
30, С. 8043 - 8053
Опубликована: Май 1, 2024
Wire
arc
additive
manufacturing
(WAAM)
stands
as
an
efficient
and
cost-effective
method
for
producing
large-scale
engineering
components
while
minimizing
waste.
This
study
explores
the
influence
of
WAAM
process
parameters
on
nickel
aluminum
bronze
(NAB)
parts,
focusing
wire
feed
rate
(WFR)
a
key
factor
governing
heat
input
its
effects
bead
geometry,
microstructure,
mechanical
properties.
The
investigation
involved
depositing
single
from
NAB
alloy
varying
WFS
within
2–7
m/min
range,
resulting
in
inputs
ranging
20.600
to
57.960
kJ/m.
results
revealed
that
increasing
up
34.944
kJ/m
led
augmentation
dimensions
increased
hardness
due
κ-precipitates
formation
α-Cu
matrix.
However,
with
further
increments
49.088
kJ/m,
exhibited
decline
uniformity
intermetallic
κ
distribution
lessened.
Through
optimization
parameters,
defect-free
single-wall
was
successfully
manufactured
enhanced
tensile
strength
along
horizontal
direction
found
be
superior
vertical
direction,
irrespective
specimen's
extraction
regions.
Additionally,
bottom
specimen
slightly
higher
than
center
upper
specimens
being
initial
layers
wall
deposited
substrate
plate,
undergoing
faster
cooling
rate.
These
findings
underscore
potential
robust
fabrication
larger
precision
efficiency.
Advanced Engineering Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Nickel
aluminum
bronze
alloy,
a
complex
alloy
containing
multiple
phases,
has
become
the
most
common
material
for
naval
propellers
due
to
its
good
corrosion
resistance.
Traditional
cast
nickel
shows
serious
behavior
in
harsh
service
environments.
This
article
reviews
progress
on
behaviors
and
mechanism
of
highly
corrosive
marine
environments
systematically
discusses
research
status
surface
modification
technologies
such
as
laser
strengthening,
mechanical
shot
peening,
friction
stir
thermal
spraying,
so
on.
To
improve
comprehensive
performance
bronze,
this
work
focuses
analyzing
effect
process
parameters
resistance
while
researching
propeller
blade
technology.
Finally,
future
development
direction
fields
arc
additive
manufacturing
is
prospected.
