|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||A-12: Modeling and Characterization of the Deposition Stability in the Highly Efficient Laser Hot-wire Additive Manufacturing
||Zhenguo Nie, Gang Wang, James Cawley, Yiming (Kevin) Rong
|On-Site Speaker (Planned)
Laser hot-wire (LHW) process is widely used to deposit material with the advantage of low heat input, high deposition efficiency and low dilution ratio. High deposition stability can promote the feeding efficiency and welding quality. The processing window of stable deposition is a key factor to obtain a continuous manufacturing process. A laser hot-wire process experiment was designed to get the range of current and wire length for stable deposition. Numerical simulation of LHW additive manufacturing is conducted to obtain the temperature field, stress and strain fields.Numerical computation method is used to map the processing window of stable hot wire deposition. This processing window can be validated by the experimental results. It is shown that the stable deposition has the top and bottom limitation under a certain current intensity and wire feed speed. The space between the two limitations provides high deposition stability for LHW process.
||Planned: A print-only volume