| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Uniaxial Equivalence of Bending Creep in Additively Manufactured AlSi10Mg Alloy |
| Author(s) |
Shobhit Pratap Singh, Faizan Hijazi, Vikram Jayaram, Dheepa Srinivasan, Praveen Kumar |
| On-Site Speaker (Planned) |
Praveen Kumar |
| Abstract Scope |
Creep of additively manufactured AlSi10Mg hypoeutectic alloy, printed by laser powder bed fusion (L-PBF) is conducted in compression, tension and bending of cantilevers at 250oC. Digital image correlation is specifically utilized to extract strain profiles from bending cantilevers constrained at one end, which enables the acquisition of multiple strain-time creep curves from a single tested specimen. Uniaxial tests were performed between 75 to 140 MPa and the bending was conducted with loads to give stresses between 80 and 125 MPa, which far exceeds the actual service conditions. The uniaxial equivalent minimum creep rates obtained from the DIC-augmented bending creep appears to be in good agreement with the minimum creep rates from uniaxial experiments. Electron microscopic investigation gives evidence of the formation of nano-precipitates pinning the dislocations, probably causing the creep strengthening in this alloy. Additional coarsening of eutectic Si particles is also observed during creep. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Other, Mechanical Properties |