| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
Surface Roughness of Hastelloy-X Components Manufactured by Selective Laser Melting |
| Author(s) |
Yang Tian, Dacian Tomus, Aijun Huang, Xinhua Wu |
| On-Site Speaker (Planned) |
Yang Tian |
| Abstract Scope |
Poor surface quality presents a major limitation to the widespread use of selective laser melting (SLM) technology. In this study, systematic research has been carried out to study the influences of different processing parameters and scanning strategies on surface roughness of SLMed Hastelloy X using EOSM280 machine. Processing window is proposed which would provide support to identify appropriate processing conditions and meet specific demand. An optimum condition for achieving the lowest roughness for up-skin and down-skin surface has been obtained respectively. Surface characterizations revealed that melt pool shape and the presence of partially melted particles are vital factors in determining the surface profile and resultant roughness in the final parts. Computer simulation was also used to investigate the heat conduction through powder and solid and their contributions to the roughness on these two types of surfaces. The simulated result has been found to be consistent with the measured. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |