About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Symposium
|
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Presentation Title |
Joining Additive Manufactured 316L via Friction Welding: An In‑Situ Microtensile and Microstructural Evaluation |
| Author(s) |
Loďc Jegou, Fatma Nur Depboylu, Andrei-Alexandru Popa |
| On-Site Speaker (Planned) |
Fatma Nur Depboylu |
| Abstract Scope |
Integrating Laser Powder Bed Fusion (LPBF) with Rotational Friction Welding (RFW) enables large-scale fabrication of complex 316L stainless steel components. While our previous macro-mechanical studies confirmed joint integrity, fractures consistently occurred in the base metal (BM), masking intrinsic weld zone (WZ) properties. To overcome this, this study utilizes in-situ micro-tensile testing coupled with high-energy synchrotron X-ray diffraction (HE-XRD). Longitudinal and transverse specimens were analyzed under real-time loading to isolate interface behavior. Preliminary results demonstrate significant grain refinement (10.2 µm vs. 25.4 µm in BM) and increased hardness (290 HV vs. 268 HV) within the WZ, directly influencing local strain localization. Ongoing analysis of specific {hkl} lattice strains, dislocation evolution, and Orientation Distribution Functions (ODF) characterizes the deformation stability of the WZ fiber texture. This work establishes a new reliability standard for hybrid additive-joining technologies. |
| Proceedings Inclusion? |
Undecided |