|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Inertia Friction Welding of 304L Stainless to 1018 Steel
||Nathan Switzner, Zhenzhen Yu, Michael Eff, Thomas Lienert, Stephen Liu
|On-Site Speaker (Planned)
Inertia friction welding (IFW) was used to join 304L stainless steel to 1018 steel. IFW parameters rotation speed and axial pressure were varied. Increase in IFW rotation speed increased both friction time and axial shortening. Increase in axial pressure decreased friction time but increased axial shortening. Light optical microscopy, micro-hardness, and scanning electron microscopy with energy dispersive X-ray spectroscopy were used to compare microstructure and mechanical properties of the interface and heat affected zone (HAZ) of IFW welds with 1018 steel clad with 309L stainless using flux-cored arc welding (FCAW). Both fusion welds and friction welds exhibited a martensite layer at the interface, but the morphology was different, and the friction welds had less martensite near the center of the joint. Tensile bars were machined from inner and outer radial locations in the longitudinal orientation of friction welds. All tensile failures occurred in the 1018 HAZ, except for one fracture at the IFW interface. Generally the friction welds had higher tensile strength, but lower ductility than the fusion welds.
||Planned: A print-only volume