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Microstructural study on a Fe-10Cu alloy fabricated by selective laser melting for defect-free process optimization based on the energy density
- Source :
- Journal of Materials Research and Technology, Vol 9, Iss 6, Pp 12834-12839 (2020)
- Publication Year :
- 2020
- Publisher :
- Elsevier, 2020.
-
Abstract
- Process optimization for the selective laser melting (SLM) of the Fe-10Cu alloy was performed to obtain defect-free parts based on the energy density for thermodynamically complete melting. A microstructural study was conducted for the corresponding energy densities that focused on identifying defect formation mechanisms. A range of defects formed via by diverse mechanisms, such as lack of fusion, balling, shrinkage and the key-hole effect, were characterized, including mixed zones. The process range in which these defects were not formed could be suggested as the optimal conditions for SLM of the Fe-10Cu alloy. In this study, a laser power below 320 W, a scan speed below 1523 mm/s and an energy density under 15.56 J/mm3 were indicated to be the optimum process conditions for SLM of Fe-10Cu alloy to avoid micro-cracks from shrinkage, balling and rounded pores from the key-hole phenomenon.
Details
- Language :
- English
- ISSN :
- 22387854
- Volume :
- 9
- Issue :
- 6
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Materials Research and Technology
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.7a060c1cdd3342f997df126b76b2f6ac
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.jmrt.2020.09.051