Authors:
Shahzad Salam (1), Ichiro Mitama (1), Takuma Sakata (2)
1- Technology Research Center, Sumitomo Heavy Industries Ltd., Japan
2- Corporate Planning Department, Sumitomo Heavy Industries Ltd., Japan
Abstract:
Powder quality is a critical processing parameter in powder-based metal additive manufacturing that can affect both the processability and mechanical properties of the manufactured parts. While commercially available powders come in various shapes, sizes, and distributions, it is essential to understand the impact of these powder characteristics on the finished product. This study investigates the correlation between powder characteristics and stress-rupture behavior of IN718 alloy. Test samples were fabricated using laser powder bed fusion (L-PBF) with powders of varying characteristics. The results indicate that the samples fabricated with powder of optimal characteristics contained fewer microstructural defects resulting in a significant 13-fold improvement in rupture-life. The aim of this article is to discuss these powder effects and provide a basis for producing final components with consistent mechanical properties.
DOI:
https://doi.org/10.59499/EP246278214
