The alloys CuAl9Ni5Fe4Mn and CuMn13Al8Fe3Ni2 were arc-sprayed with a spiral-shaped pattern in this work, using both pressurized air and a mixture of nitrogen and hydrogen. Process temperatures were recorded by thermographic imaging and residual stresses were measured by modified hole-drilling method. Moreover, analyses of the cavitation erosion behavior and other properties were carried out. It was found that a change in the spray pattern can strongly reduce residual stresses and material loss by cavitation erosion.

aluminum bronze, arc spraying, cavitation erosion, hole-drilling method, residual stress analysis, thermographic imaging
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2018
ASM International
Topics
Cavitation erosion Aluminum bronze Residual stress analysis Hole-drilling method Thermal spray coating Thermography
Issue Section:
Thermal Spray Applications
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