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ranges O
between O
0° O
≤ O
α O
≤ O
90° O
and O
80° O
≤ O
β O
≤ O
280° O
. O
In O
addition O
to O
decreasing O
the O
effective O
hydraulic B-CONPRI
diameter E-CONPRI
of O
a O
cooling B-MACEQ
channel E-MACEQ
, O
the O
surface B-PRO
roughness E-PRO
also O
influences O
the O
local B-CONPRI
Nusselt I-CONPRI
number E-CONPRI
, O
which O
is O
quantified O
using O
the O
extracted S-CONPRI
regression O
model S-CONPRI
. O
This O
paper O
reports O
on O
the O
results O
of O
a O
round B-CHAR
robin I-CHAR
test E-CHAR
conducted O
by O
ten O
X-ray B-CHAR
micro I-CHAR
computed I-CHAR
tomography E-CHAR
( O
micro-CT S-CHAR
) O
laboratories S-CONPRI
with O
the O
same O
three O
selected O
titanium B-MATE
alloy E-MATE
( O
Ti6Al4V S-MATE
) O
laser B-MANP
powder I-MANP
bed I-MANP
fusion E-MANP
( O
L-PBF S-MANP
) O
test O
parts O
. O
These O
parts O
were O
a O
10-mm O
cube S-CONPRI