Some Considerations Regarding Micro Hardness of Parts Manufactured from 316-L Steel Using SLM Technology

Abstract:

In this paper is investigated the effect of building parts with different layer sizes using an additive manufacturing technique, from the statistical point of view. The paper is focused on the differences that appear at the stainless steel parts when the building layer is increased, this being done on the SLM 250 HL machine. This machine uses a fiber laser to melt fine powder on a layer-by-layer basis to create three-dimensional metallic parts from CAD files. The samples were constructed using two different layer thicknesses and then reprocess so that a micro hardness test could be employed. The micro hardness’s are compared using statistical methods. Overall, the obtained results indicate that the outcome influences the manufacturing strategy that it is chosen.

• Periodical: Applied Mechanics and Materials (Volume 760)
• Pages: 515-520
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.760.515
• Online since: May 2015
• Authors: George Răzvan Buican*, Gheorghe Oancea, Camil Lancea, Mihai Alin Pop
• Keywords: 316-L, Additive Manufacturing (AM), Microhardness, Selective Laser Melting

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