About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
F-67: Thermo-Optical Properties of Metal Alloys Used in Wire and Arc Additive Manufacturing Processes |
| Author(s) |
Kevin Mullaney, Ralph Peter Tatam |
| On-Site Speaker (Planned) |
Kevin Mullaney |
| Abstract Scope |
The emissivity of a various metals used in wire based directed energy deposition additive manufacturing processes have been measured. The metals evaluated were titanium alloy (Ti-6Al-4V), Inconel 718, mild steel, aluminium alloy 2319 and nickel-aluminium bronze (NAB). At ambient temperature, the measured emissivity was 0.26 - 0.28 for Ti-6Al-4V; for Inconel 718 it was 0.45 - 0.54; for mild steel it was 0.4 - 0.72; for aluminium 2319 it was 0.14; and for NAB it was 0.35. The approximate emissivity values are also given over the temperature range 20 - 1400 0C. The spectrophotometric technique was used to measure the metal thermo-optical properties. The data presented, can be used when thermal modelling these processes and the reflectance/wavelength curves can be used as an input when using in-situ optical pyrometers. The effect of residual oxygen within the gas shielding atmosphere on measured emissivity, is also discussed for some of the materials. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Process Technology, Characterization |