| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
A-72: Neutron Diffraction Measurement of Residual Stresses in AFSD AA6061 Deposits |
| Author(s) |
Ning Zhu, Luke Brewer, Brian Jordon, Paul Allison |
| On-Site Speaker (Planned) |
Ning Zhu |
| Abstract Scope |
This poster presents the correlation between processing parameters and residual stresses in AA6061 produced by additive friction stir deposition (AFSD). Although the distortion from solid-state additively manufacturing processes may be low due to substantial clamping of the workpiece, but this mechanical constraint may only serve to increase the residual stresses. In this study, three AFSD AA6061 deposits were built with varied traverse speeds and the residual stress distributions were analyzed via neutron diffraction method using the VULCAN instrument at Oak Ridge National Lab. In the deposit built with medium traverse speed (127 mm/min), the residual stresses were generally tensile between -5 and 91 MPa at the starting end and center region of the deposit, and the balancing compressive residual stresses were between 127 and -46 MPa at the finishing end. The measured residual stresses are still significant in light of the low yield strength of the AFSD deposits. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Mechanical Properties, Aluminum |