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Proceedings Paper

Parameters in selective laser melting for processing metallic powders
Author(s): Tomasz Kurzynowski; Edward Chlebus; Bogumiła Kuźnicka; Jacek Reiner
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Paper Abstract

The paper presents results of studies on Selective Laser Melting. SLM is an additive manufacturing technology which may be used to process almost all metallic materials in the form of powder. Types of energy emission sources, mainly fiber lasers and/or Nd:YAG laser with similar characteristics and the wavelength of 1,06 - 1,08 microns, are provided primarily for processing metallic powder materials with high absorption of laser radiation. The paper presents results of selected variable parameters (laser power, scanning time, scanning strategy) and fixed parameters such as the protective atmosphere (argon, nitrogen, helium), temperature, type and shape of the powder material. The thematic scope is very broad, so the work was focused on optimizing the process of selective laser micrometallurgy for producing fully dense parts. The density is closely linked with other two conditions: discontinuity of the microstructure (microcracks) and stability (repeatability) of the process. Materials used for the research were stainless steel 316L (AISI), tool steel H13 (AISI), and titanium alloy Ti6Al7Nb (ISO 5832-11). Studies were performed with a scanning electron microscope, a light microscopes, a confocal microscope and a μCT scanner.

Paper Details

Date Published: 7 February 2012
PDF: 6 pages
Proc. SPIE 8239, High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications, 823914 (7 February 2012); doi: 10.1117/12.907292
Show Author Affiliations
Tomasz Kurzynowski, Wroclaw Univ. of Technology (Poland)
Edward Chlebus, Wroclaw Univ. of Technology (Poland)
Bogumiła Kuźnicka, Wroclaw Univ. of Technology (Poland)
Jacek Reiner, Wroclaw Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 8239:
High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications
Eckhard Beyer; Timothy Morris, Editor(s)

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