Study of Interactive Stresses in Thin WC-Co Coating of Thick Mild Steel Substrate Using High-Precision Neutron Diffraction

Andrew M. Venter; Vladimir Luzin; Oluseyi Philip Oladijo; L.A. Cornish; Natasha Sacks

doi:10.4028/www.scientific.net/MSF.772.161

Paper Titles

Evaluation of Residual Stresses at the Interface with Implant by Synchrotron Radiation
p.135

In-Depth Distribution of Stresses Measured by Multireflection Grazing Incidence Diffraction
p.143

Laser Surface Hardening of Steel: Effect of Process Atmosphere on the Microstructure and Residual Stresses
p.149

Residual Stress in Coatings Produced by Cold Spray
p.155

Study of Interactive Stresses in Thin WC-Co Coating of Thick Mild Steel Substrate Using High-Precision Neutron Diffraction
p.161

Through Thickness Residual Stress Measurements by Neutron Diffraction and Hole Drilling in a Single Laser-Peened Spot on a Thin Aluminium Plate
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Internal Residual Strain Distribution in Chromium-Molybdenum Steel after Carburizing and Quenching Measured by Neutron Strain Scanning
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Residual Stress Distributions in Bi-Metal (Ferritic to Austenitic Steel) Joints Made by Laser Welding
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Characterisation of Residual Stress State and Distortion in Welded Plates Stress Engineered by Local Mechanical Tensioning
p.187

HomeMaterials Science ForumMaterials Science Forum Vol. 772Study of Interactive Stresses in Thin WC-Co...

Study of Interactive Stresses in Thin WC-Co Coating of Thick Mild Steel Substrate Using High-Precision Neutron Diffraction

Abstract:

Investigations of interaction residual stresses between thin WC-Co surface coated layers on thick mild steel substrates have successfully been performed with neutron diffraction. This systematic approach was conducted on the reference grit-blasted substrates and their HVOF coated WC-Co products. Using a sub-millimeter gauge volume, precisely positioned, the stress gradient through the coated and non-coated substrates were determined and used to derive the coating stress condition prevailing in the thin coating by applying the stress balance (Stoney) approach. In addition, the average stress in each 200 μm thick coating was measured directly with very good agreement obtained between the calculated and measured stress values. Investigations were extended to determine the thermal nature of the residual stresses by studying the annealed counterpart samples as well to follow the evolution of the residual stress upon annealing.