Further Exploration of Multi-Material Fabrication Capabilities of Ultrasonic Consolidation Technique

摘要

The increasing interest in engineering designs involving parts with multiple materials, and function specific members has placed more demand for technologies to fabricate such parts. This work discusses results of further exploration of multi-material freeform fabrication using ultrasonic consolidation. Various combinations of materials, including Titanium, Silver, Tantalum, Aluminum, Molybdenum, stainless steel, Nickel, Copper, and MetPreg have been studied. Some were found to be effective as a suitable intermediate layer between difficult to join materials. Elemental Boron particles were added in situ between selected materials to modify the bonding characteristics. Microstructures of deposits were studied to evaluate bond qualities. Results show evidence of good bonds between various combinations of materials, thus illustrating increasing potential for multi-material freeform fabrication using ultrasonic consolidation.