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@ARTICLE{Vaen:874255,
author = {Vaßen, R. and Fiebig, J. and Kalfhaus, T. and Gibmeier, J.
and Kostka, A. and Schrüfer, S.},
title = {{C}orrelation of {M}icrostructure and {P}roperties of
{C}old {G}as {S}prayed {INCONEL} 718 {C}oatings},
journal = {Journal of thermal spray technology},
volume = {29},
issn = {1544-1016},
address = {Boston, Mass.},
publisher = {Springer},
reportid = {FZJ-2020-01346},
pages = {1455-1465},
year = {2020},
abstract = {In the cold gas spray process, deposition of particles
takes place through intensive plastic deformation upon
impact in a solid state at temperatures well below their
melting point. The high particle impact velocities and
corresponding peening effects can lead to high compressive
residual stresses in cold spray coatings. This can be
advantageous with regard to mechanical properties as fatigue
life and hence, cold spray is an ideal process for repair
applications. In this study, INCONEL 718 particles were cold
sprayed by using nitrogen as propellant gas. The deposited
coatings with different thicknesses were characterized using
electron microscopy techniques to study grain refinement and
precipitates in the coating. In addition, depth-resolved
residual stress measurements have been performed by the
incremental hole drilling method. The residual stress depth
profiles in the coatings indicate compressive residual
stresses of several hundred MPa which are hardly influenced
by the coating thickness. In addition, large compressive
stress levels are found in surface-near regions of the
substrate due to the grit blasting process. Furthermore, a
post-heat treatment analysis was performed to investigate
its influence on residual stresses and bonding strength.
These findings are used to develop a consistent explanation
of the dependence of strength values on thickness.},
cin = {IEK-1},
ddc = {670},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000515818000001},
doi = {10.1007/s11666-020-00988-w},
url = {https://juser.fz-juelich.de/record/874255},
}