Abstract
Selective laser melting (SLM) process has been lately extensively applied in manufacturing of Nickel-based super alloys, which compared to conventional manufacturing routes offers increased design flexibility and simplification of the manufacturing process. However, in order to make SLM process even more beneficial, its process time has to be reduced. One of the ways to tackle this problem is by tailoring process parameters through application of high laser power and base plate pre-heating. In this paper, a comparative study of optimum SLM fabrication conditions of Inconel 718 superalloy under high laser power and with and without plate pre-heating was conducted. Furthermore, the effect of layer thickness on melt pool characteristics, porosity and hardness were investigated to determine how laser power and pre-heating affect microstructure development.
| Original language | English |
|---|---|
| Pages (from-to) | 784-788 |
| Journal | Materials Today: Proceedings |
| Volume | 30 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2020 |
| Event | 2019 International Scientific Conference on Materials Science: Composites, Alloys and Materials Chemistry, MS-CAMC 2019 - Saint Petersburg, Russian Federation Duration: 20 Nov 2019 → 21 Nov 2019 |
Keywords
- Additive manufacturing
- Grain structure
- Nickel alloy
- Selective laser melting
- Texture