Surface Micromorphology and Structure of Stainless and Maraging Steel Obtained via Selective Laser Melting: A Mössbauer Spectroscopy Study
نویسندگان
چکیده
Selective laser melting (SLM) as an additive manufacturing method makes it possible to quickly produce complexly shaped three-dimensional (3D) metal specimens from a powder. This work describes how SLM affects the surface phase composition of 3D printed specimen, analyzed with conversion electron Mössbauer spectroscopy (CEMS), X-ray (CXMS) and diffraction (XRD). Both stainless 1.4404 (CL20ES) steel maraging 1.2709 (CL50WS) have been investigated. A transformation ferritic into austenitic one was proven by comparing initial CL50WS powder final specimen using CXMS. takes place during process. No identified in steel. The differences via CEMS between non-annealed annealed demonstrated oxidation layer. occurs annealing sample layers less than 1 μm thick. quality examined scanning microscopy (SEM), which presented imperfections on face specimen. Granules bonded both irregular spherical pores were observed.
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ژورنال
عنوان ژورنال: Metals
سال: 2021
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met11071028