AI Article Synopsis
- Duplex stainless steel powders for laser additive manufacturing, specifically super duplex stainless steel X2CrNiMoCuWN25-7-4, are still in the early stages of development.
- The study found that using nitrogen as an atomization gas led to higher nitrogen content in the steel powders and lower gas porosity compared to argon.
- Additionally, increased atomization gas temperatures resulted in finer powder particles, but the gas content in the particles had little impact on the final porosity of the built parts during the laser processing.
Article Abstract
Duplex stainless steel powders for laser additive manufacturing have not been developed extensively. In this study, the melts of a super duplex stainless steel X2CrNiMoCuWN25-7-4 (AISI F55, 1.4501) were atomized with different process gases (Ar or N) at different atomization gas temperatures. The process gas N in the melting chamber leads to a higher nitrogen dissolution in the steel and a higher nitrogen content of the atomized powders. The argon-atomized powders have more gas porosity inside the particles than the nitrogen-atomized powders. In addition, the higher the atomization gas temperature, the finer the powder particles. The duplex stainless steel powders showed good processability during PBF-LB/M (Laser powder bed fusion). The gas entrapment in the powder particles, regardless of the gas chemistry and the gas content, appears to have a negligible effect on the porosity of the as-built parts.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9821910 | PMC |
| http://dx.doi.org/10.3390/ma16010435 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!