Recently, high-performance lightweight materials with outstanding mechanical properties have opened up their way to some sophisticated industrial applications. As one of these systems, aluminum matrix composites/nanocomposites (AMCs) offer an outstanding combination of relative density, hardness, wear resistance, and mechanical strength. Until now, several additive manufacturing methods have be...

Ultrasonic additive manufacturing (UAM), a solid-state technology, was invented in 1999 by Dawn White [...]

Abstract Ultrasonic additive manufacturing has been used to fabricate laminated composites of commercially pure aluminum and a nanocrystalline nickel–cobalt (nc-NiCo) alloy. The nc-NiCo alloy would not weld itself but readily welded aluminum. Thus, by alternating between foils Al, we achieved multi-material laminates with strong interlayer bonding. Electron microscopy showed that the nanoscale ...

Additive manufacturing techniques can produce complex, high-value metal parts, with potential applications as critical metal components such as those found in aerospace engines and as customized biomedical implants. Material porosity in these parts is undesirable for aerospace parts - since porosity could lead to premature failure - and desirable for some biomedical implants - since surface-bre...

Ultrasonic-assisted wire–arc additive manufacturing (WAAM) can refine microstructures, enhancing performance and improving stress concentration anisotropy. It has important application prospects in aerospace, weaponry, energy, transportation, other frontier fields. However, the process parameters of ultrasonic treatment as an auxiliary technology WAAM still have impact on product indicators, su...

The meso/micro layered manufacturing technologies have significant implications for the design and fabrication of complex miniature structures. A laser-based additive/subtractive Rapid Manufacturing system is thus developed to build meso/micro structures. By incorporating laser microdeposition and micromachining with a pulsed Nd:YAG laser that has four harmonic wavelengths, this manufacturing s...

Abstract Ultrasonic additive manufacturing (UAM) is a solid-state metal process, with the combination of layer by ultrasonic seam welding and CNC machining. Due to friction deformation at bonding interface, softening effect temperature generated, microstructure substrate materials evolving constantly. In this paper, in order better understand mechanisms, good practice capability UAM, influence ...