Product Code: PIC06_305
Residual Stresses in Al7075 Alloy Plate Laser Clad with AL-12SI Alloy Powder
Yvonne Durandet, Industrial Research Institute of Swinburne University of Technology (IRIS); Hawthorn Australia
R. Deam, Industrial Research Institute Swinburne; Hawthorn Australia
Maurice Ripley, Australian Nuclear Science and Technology Organisation (ANSTO); Lucas Heights Australia
Philip Bendeich, Australian Nuclear Science and Technology Organisation (ANSTO); Lucas Heights Australia
Milan Brandt, Industrial Research Institute of Swinburne University of Technology (IRIS); Hawthorn Australia
Qianchu Liu, Defence Science and Technology Organisation (DSTO); Fishermens Bend Australia
Pud Baburamani, Defence Science and Technology Organisation (DSTO); Fishermens Bend Australia
Presented at PICALO 2006
Laser cladding of Al7075-T651 alloy rolled plates was performed at IRIS using a side injection powder nozzle, an Al-12Si alloy powder and a high power Nd:YAG laser. A single layer of clad alloy was deposited inside a groove machined along the plates' rolling direction. The cladding direction was either parallel or transverse to the length of the groove, while the laser parameters (laser power, scan rate, powder mass flow rate, track increment) and size of the treated area were kept constant. Temperature measurements at the back side of the plates showed that the plates' thermal histories differed significantly with the cladding direction. Residual stresses were measured in the clad and through the thickness of the plate using neutron diffraction scattering at ANSTO. Results are presented showing the effects of the laser cladding pattern on the energy input and the residual stress profiles in the plates.
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