Abstract
A comprehensive study was undertaken to determine the effects of carrier gas temperature, pressure, and nozzle speed on the residual stresses induced by cold spray coating of aluminum 7075 powder onto AZ31B-H24 magnesium substrate. Embedded Fiber Bragg Grating sensors and thermocouples were employed for simultaneous in-situ measurements of strain and temperature during cold spray process. A statistical model was then developed based on the significance and interactions of the cold spray parameters on the residual stress field. This model demonstrated that the induced temperature is the most significant parameter to the final formation of residual stress. It is also shown that the peening effect plus the temperature resulted from the cold spray yields to the dynamic recrystallization of the substrate near the surface, and generates nano-size grains at the interface. This research validates that the final size of the refined grains and the level of induced residual stress depend heavily on the process' thermal energy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
