| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Alternative Processes (Beyond the Beam)
|
| Presentation Title |
A-45: Temperature Dependent Thermal Conductivity of Metallic Powder Alloys for Additive Manufacturing |
| Author(s) |
Faiyaz Ahsan, Leila Ladani |
| On-Site Speaker (Planned) |
Faiyaz Ahsan |
| Abstract Scope |
Thermo-physical properties of metallic powders play a critical role in melting and solidification of powder during powder bed fusion process. Thermal conductivity is one of the most important thermo-physical properties. Furthermore, it is found that this property is a function of temperature. Measuring thermal conductivity of metallic powder at high temperatures is a very challenging task. Therefore, simulation of the powder bed fusion process is most often conducted using theoretical values of conductivity based on available analytical models which could result in inaccurate simulation results. Experimental measurements of this property at high temperature will fill this gap. In this work, a combination measurement of thermal diffusivity and thermal capacity is used to determine thermal conductivity of various common metallic powders used in additive manufacturing process up to 850 degree Celsius. The results were compared with available analytical models that were used to determine thermal conductivity of powders. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |