|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Materials for Transportation and Lightweighting
||Joining Dissimilar Materials across Varying Length Scales by Impact Welding
||Anupam Vivek, Taeseon Lee, Glenn S Daehn
|On-Site Speaker (Planned)
Impact welding is a solid state welding technique that enables dissimilar joining of light materials such as high strength steel and aluminum alloys with reduced formation of brittle intermetallics as compared to fusion welding. This work focuses on fundamental understanding of effect of process parameters on the structure and property of impact welds. Vaporizing foil actuator welding (VFAW) and laser impact welding (LIW) processes were used for welding Al 1100 with AISI 1018 steel. The thickness of aluminum flyer sheets ranged from 0.0254 mm (0.001 inch) to 2.032 mm (0.080 inch). Impact angle and velocity were measured with a multi-probe photonic Doppler velocimeter. Under the same impact conditions, thickness of the intermetallic layer as well as the amplitude and wavelength of the interfacial waves increased with increasing flyer sheet thickness. Reduction in intermetallic content of the interface also led to stronger welds that failed in parent aluminum during mechanical testing.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)