8 research outputs found
Predicting the presence of macrovascular causes in non-traumatic intracerebral haemorrhage: the DIAGRAM prediction score
Paroxysmal Cerebral Disorder
Residual stresses as a factor in the selection of tungsten carbide coatings for a jet engine application
The Effect of WC-17co Thermal Spray Coating by HVOF and Hard Chromium Electroplating on the Fatigue Life and Abrasive Wear Resistance of AISI 4340 High Strength Steel
Residual Stresses Distribution Through Thick HVOF Sprayed Inconel 718 Coatings
Residual stress build up in thick thermal spray coatings is a property of concern. Coating adhesion to the substrate
is influenced by residual stresses that are generated during the coating deposition process. In the HVOF spray
process, significant peening stresses are generated during impact of semi molten particles on the substrate. The
combination of these peening stresses together with quenching and thermal mismatch stresses can be of
significant importance. Both numerical Finite Element Method (FEM), to calculate peening, quenching stresses, and
experimental methods, i.e. Modified Layer Removal Method (MLRM) and Neutron Diffraction, have been utilised in this work. The investigation was performed on thick Inconel 718 coatings on Inconel 718 substrates. Combined, these numerical and experimental techniques yield a deeper understanding of residual stress formation in the HVOF process and thus a tool for process optimisation. The relationship between the stress state and deposit/substrate thickness ratio is given particular interest