About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
Critical Velocity and Deposition Efficiency in Cold Spray: A Reduced-order Model and Experimental Validation |
Author(s) |
Che Zhang, Tesfaye Tadesse Molla, Christian Brandl, Graham B. Schaffer |
On-Site Speaker (Planned) |
Che Zhang |
Abstract Scope |
Deposition efficiency (DE) in cold spray additive manufacturing (CSAM) is a key indicator for evaluating process efficiency. Here we develop a reduced-order model to predict DE by simultaneously calculating the critical velocity and impact velocity using the gas temperature, gas pressure, and particle size as inputs. An equation for calculating critical velocity is proposed based on the hydrodynamic spall mechanism with the support of experimental data. The impact velocity is determined using a parametric expression that accounts for the bow shock effect. The model is first calibrated for aluminum to create sprayability maps. Ten validation experiments are then conducted using two different cold spray systems. The experimental DE values show a remarkable level of agreement with the predicted results. The model can be used to rapidly identify optimal process parameters for achieving high DE of metals, contributing to improved process efficiency and product quality during CSAM. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, ICME |