| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A Comparison Between Multi-scale Area Analysis and ISO Surface Roughness Parameters for Characterizing Additively Manufactured Surfaces |
| Author(s) |
Nathaniel Rutkowski, Christopher Brown, Sneha Prabha Narra |
| On-Site Speaker (Planned) |
Sneha Prabha Narra |
| Abstract Scope |
In this work, multiscale area analysis (MAA) and ISO surface roughness parameters (SRP) will be considered as metrics for characterizing surface topographies (ST) of AlSi10Mg and IN718 blocks produced by additive manufacturing (AM), particularly laser powder bed fusion (LPBF). The complex ST of LPBF parts is highly dictated by the deposition parameters, powder size, and morphology. It is unclear which SRP are relevant for analyzing AM parts. Test blocks were manufactured by systematically varying beam power, travel velocity, part thickness, and overlap between the contours. Preliminary results from MAA and ISO SRP have shown that the surface roughness of the part is correlated to the melt track dimensions and the ISO SRP correlations do not hold at smaller scales. Understanding the most relevant metrics to measure ST of AM parts can assist in the development of application-specific manufacturing standards. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |