Materials,
Journal Year:
2024,
Volume and Issue:
17(22), P. 5508 - 5508
Published: Nov. 12, 2024
In
this
study,
the
vitrification
of
asbestos-cement
waste
(ACW)
and
glass
cullet
from
cathode-ray
tubes
(CRTs)
was
performed.
The
resulting
product
abovementioned
used
as
reinforcing
phase
in
a
composite
with
AA7075
alloy
matrix.
made
by
means
FSP
(friction
stir
processing)
method.
main
aim
work
to
determine
whether
can
be
utilized
composite.
tests
show
that
introducing
into
matrix
increases
both
hardness
material
its
wear
resistance.
characterized
39%
higher
30.4%
resistance
compared
initial
alloy.
changes
properties
were
caused
strong
refinement
grains,
but
primarily
presence
hard
particles
This
research
demonstrates
vitrified
material,
thanks
properties,
constitute
full-value
ultimately
replace
more
expensive
engineering
materials
composites.
Materials,
Journal Year:
2024,
Volume and Issue:
17(7), P. 1452 - 1452
Published: March 22, 2024
This
study
optimized
friction
stir
welding
(FSW)
parameters
for
1.6
mm
thick
2024T3
aluminum
alloy
sheets.
A
3
×
factorial
design
was
employed
to
explore
tool
rotation
speeds
(1100
1300
rpm)
and
(140
180
mm/min).
Static
tensile
tests
revealed
the
joints'
maximum
strength
at
87%
relative
base
material.
Hyperparameter
optimization
conducted
machine
learning
(ML)
models,
including
random
forest
XGBoost,
multilayer
perceptron
artificial
neural
network
(MLP-ANN)
using
grid
search.
Welding
parameter
extrapolation
were
then
carried
out,
with
final
predictions
analyzed
response
surface
methodology
(RSM).
The
ML
models
achieved
over
98%
accuracy
in
regression,
demonstrating
significant
effectiveness
FSW
process
enhancement.
Experimentally
validated,
resulted
an
joint
efficiency
of
93%
outcome
highlights
critical
role
advanced
analytical
techniques
improving
quality
efficiency.
Journal of Alloys and Metallurgical Systems,
Journal Year:
2024,
Volume and Issue:
7, P. 100091 - 100091
Published: June 28, 2024
FSW
joints
are
promising
because
they
have
a
minimal
heat
input
in
welding
and
can
limit
the
amount
of
intermetallic
compound
formation
dissimilar
metals.
Solid-state
processes,
particularly
friction
stir
(FSW),
preferred
for
aluminium
alloys
due
to
their
low
ability
minimize
formation.
This
study
conducted
trials
on
AA7075
AA2024
alloys,
each
4
mm
thick.
Parameters
such
as
axial
force,
rotational
speed,
traverse
feed
were
adjusted
while
keeping
other
factors
constant.
The
analyzed
weld
geometry
characteristics,
including
bead
width
penetration
depth.
Angle
distortions
during
thin
plates
butt
joint
investigated.
Additionally,
examined
effects
parameters
mechanical
properties
tensile
strength
hardness
immediately
after
welding.
Microstructures
welds
observed
using
optical
microscopy
(OM).
optimal
achieved
at
speed
1000
rpm,
30
mm/min,
an
force
10
kN.
condition
facilitates
material
flow
around
pin
ideal
ensuring
adequate
filling
preventing
tunnel
zone's
microstructure
under
these
exhibits
finely
recrystallized
structure
with
significantly
smaller
grain
size
than
base
material.
Consequently,
this
enhances
joint's
microhardness
strength.
Materials Research,
Journal Year:
2025,
Volume and Issue:
28
Published: Jan. 1, 2025
The
present
study
investigates
friction
stir
welded
AA6065-10%
Al2O3MMC
by
incorporating
varying
percentages
of
heat
treated
biosilica.
biosilica
is
first
extracted
from
waste
cassava
peel,
and
it
heated
under
1500°C,
to
get
properly
arranged
crystalline
structured
particle.
During
welding
process,
the
particle
dispersed
around
zone,
which
in
turn
impacts
load
carrying
capacity
material.
revealed
that
3
vol.%
infused
FSW
composite
‘C’
shows
maximum
tensile
strength
276
MPa,
yield
238
impact
energy
20.8
J,
elongation
5.2%,
fatigue
176
MPa.
Further,
5
‘D’
hardness
121
Hv.
Additionally,
has
been
discovered
microstructural
analysis
inclusion
fine-grained
heat-treated
exhibits
greatest
dispersion
within
nugget
affected
thermo
mechanically
affects
composite's
overall
characteristics.
Thus,
because
their
less
dense,
better
mechanical
properties,
could
be
influenced
areas
where
joint
application,
bearing
are
needed
such
as
aerospace,
heavy
industrial,
infrastructural,
transport
military
sector.
Archives of Civil and Mechanical Engineering,
Journal Year:
2024,
Volume and Issue:
24(4)
Published: July 31, 2024
Abstract
This
study
examines
the
impact
of
Friction
Stir
Processing
(FSP)
with
TiO
2
nanoparticle
incorporation
on
microstructural,
mechanical,
and
tribological
properties
AA5083
Metal
Matrix
Composites
(MMCs).
It
offers
a
detailed
analysis
alterations
in
alloy’s
characteristics
due
to
FSP.
Microstructural
examination
was
conducted
using
optical
microscopy
(OM)
scanning
electron
(SEM).
Significant
findings
include
microstructural
refinement
where
addition
during
FSP
shrank
grain
size
from
20
3
µm
after
one
pass,
which
then
rose
7
following
four
passes.
Mechanical
properties,
specifically
microhardness
tensile
strength,
were
assessed.
Results
indicated
that
passes,
material
can
reach
yield
strength
192
MPa
an
ultimate
(UTS)
359
MPa,
alongside
consistent
103
HV0.1.
Furthermore,
it
observed
increasing
passes
enhances
energy
absorption,
although
remains
lower
than
base
material.
Analysis
fracture
wear
mechanisms
has
led
conclusion
more
transition
mix
ductile
brittle
behaviors,
friction
coefficient
decreases
by
up
22.95%.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 2, 2025
Based
on
the
Johnson–Cook
constitutive
model
and
modified
Coulomb's
law,
study
investigates
impact
of
various
process
parameters
weld
temperature
field
in
high-strength
5052
aluminum
alloy
friction
stir
welding
(FSW)
for
aerospace
applications.
Utilizing
a
thermo-mechanical
model,
significance
rotational
speed,
indentation
peak
is
examined
through
Taguchi's
orthogonal
experimental
design.
S/N
ratio
ANOVA
results
show
that
speed
has
most
significant
effect
weld,
followed
by
amount
indentation,
smallest
effect,
optimal
combination
determined
as
follows:the
1000
rpm,
0.15
mm,
1
mm/s,
ultimate
tensile
strength
welded
joints
under
parameter
increased
more
than
40%relative
to
base
material,
yield
113.5%.
The
worst
parameters,
there
are
tunnel-type
defects,
fracture
surface
large
number
relatively
deep
tough
nests,
compared
with
position
Si
element
content
higher,
its
UTS
only
85.2%of
much
lower
performance
strength.
above
conclusions
demonstrate
robustness
optimization
method
provide
an
important
reference
improving
quality
FSW
joints.
The International Journal of Advanced Manufacturing Technology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 26, 2025
Abstract
This
study
investigates
the
effect
of
TiO₂
nanoparticle
reinforcement
based
on
volume
ratio
mechanical
properties
and
microstructure
AA7075
aluminum
alloy
processed
by
friction
stir
processing
(FSP).
Samples
with
varying
contents
blind
hole
spacings
(5
mm,
7.5
10
mm)
were
analyzed.
Results
show
that
optimal
dispersion,
achieved
at
a
5-mm
spacing
(Sample
T1),
significantly
enhances
hardness
(96.6
HV),
ultimate
tensile
strength
(506
MPa),
ductility
(9.7%
elongation).
Microstructural
analysis
reveals
grain
refinement
improved
fracture
toughness
due
to
nanoparticle-induced
crack
growth
suppression.
However,
higher
concentrations
lead
increased
brittleness.
The
highlights
importance
controlling
distribution
process
parameters
maximize
performance,
concluding
balance
between
concentration
dispersion
is
essential
for
optimizing
AA7075-TiO₂
nanocomposites.
