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to O
assess O
rolling S-MANP
’ O
s S-MATE
effectiveness S-CONPRI
in O
changing O
the O
grain B-CONPRI
structure E-CONPRI
from O
columnar O
to O
equiaxed O
, O
as S-MATE
well O
as S-MATE
in O
refining O
the O
grain B-PRO
size E-PRO
. O
An O
average S-CONPRI
grain O
size O
of O
650 O
μm O
has O
been O
obtained O
after O
five O
cycles O
of O
inter-pass O
rolling S-MANP
and O
deposition S-CONPRI
. O
When O
the O
deformed S-MANP
layer O
was O
reheated O
during O
the O
subsequent O
deposition S-CONPRI
, O
recrystallisation O
occurred O
, O
leading O
to O
the O
growth O
of O
new O
strain-free O
equiaxed B-CONPRI
grains E-CONPRI
. O
The O
depth O
of O
the O
refined O
region O
has O
been O
characterised O
and O
correlated S-CONPRI
to O
the O
hardness S-PRO
profile O
developed O
after O
rolling S-MANP
. O
Furthermore O
, O
a O
random O
texture S-FEAT