TY - GEN
T1 - Study of interactive stresses in thin WC-Co coating of thick mild steel substrate using high-precision neutron diffraction
AU - Venter, Andrew M.
AU - Luzin, Vladimir
AU - Oladijo, O. Philip
AU - Cornish, Lesley A.
AU - Sacks, Natasha
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
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U2 - 10.4028/www.scientific.net/MSF.772.161
DO - 10.4028/www.scientific.net/MSF.772.161
M3 - Conference contribution
AN - SCOPUS:84891331030
SN - 9783037859117
VL - 772
T3 - Materials Science Forum
SP - 161
EP - 165
BT - Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation VI
T2 - 6th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation, MECA SENS VI 2011
Y2 - 7 September 2011 through 9 September 2011
ER -