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Material Wissenschaft und Werkstofftechnik, vol.

Author links open overlay panel J. Cite article How to cite? Metallurgical and Materials Transactions A, vol. The resulting high density allows avoiding lengthy post-processing as required with selective laser sintering SLS of metal powders.

Materials Science and Engineering A, vol. Abstract Selective laser melting SLM is driven by the need to process near full density objects with mechanical properties comparable to those of bulk materials.

Recommended articles Citing articles 0. ISRN Selective laser melting pdf download During the process the powder particles are completely molten by the laser beam.

Because of the large energy input of the laser beam and the complete melting of particles problems like selective laser melting pdf download, residual stresses and deformation occur. Fe-based alloys with high C, B, V, and Nb contents were thus produced, resulting in a microstructure that consisted of austenitic grains and a significant amount of hard carbides and borides.

Physics Procedia, vol. Vedani 1 Email author 1.

Selective laser melting of iron-based powder – ScienceDirect

Acta Materialia, vol. Metallurgical and Materials Transactions A. Journal of Materials Engineering and Performance, vol. Journal of Thermal Analysis and Calorimetry dodnload,vol. The different appearing phenomenons are discussed and the process optimization is described.

Keywords Selective laser melting. Materials and Design, vol.

Design of Wear-Resistant Austenitic Steels for Selective Laser Melting

Metal Science and Heat Treatment, vol. Journal of Materials Science and Technology, vol. Selective laser melting SLM is driven by the need to process near full density objects with mechanical properties comparable to those of bulk materials.

International Journal of Advanced Manufacturing Technologies, vol. The latter includes an appropriate process parameter adjustment and the application of special scanning strategies.

This is a preview of subscription content, log in to check access. Metallurgical and Materials Transactions B, vol. Scripta Materialia, vol.

The major confounding factor for processing aluminium and its alloys was found to be oxidation due to the presence selective laser melting pdf download oxygen within the build chamber.

This paper considers the changes that can be made to the SLM process so as to reduce the laser power required and increase the laser scanning rates, while still producing components with a high relative density. Even with an optimum combination of process parameters a maximum relative density downloaad only Russian Metallurgy Metally, vol. This formed thin oxide films on both the solid and molten materials. Recommended articles Citing articles 0.

The high laser power is a significant meltkng as it is higher than that used in many SLM machines. Journal of Nuclear Materials, vol. However, the oxides at the sides of the melt pool selective laser melting pdf download intact creating regions of weakness and selective laser melting pdf download, as the melt pool failed to wet the surrounding material.

It also considers why aluminium and its alloys are much more difficult to process than stainless steels and commercially pure titanium.

Rapid Prototyping Journal selective laser melting pdf download,vol. Heat treatments were performed to modify the carbide distribution and morphology. Resulting parts are characterized by their microstructure, density and mechanical properties. This service is more advanced with JavaScript available, learn more at http: Materials Science and Engineering A: Journal of Materials Processing Technology,vol.

Materials Characterization, vol. International Journal ,elting Fatigue, vol.

Acknowledgments This research work was partially funded by Regione Lombardia Italy. Also, the combination of high power and low speed creates selective laser melting pdf download large melt pool that is difficult to control, leading to balling of the melt and possible damage to the powder distribution system. Metals, vol.

Van Vaerenbergh a P. Even when processing is carried out successfully, the high power and slow scan speed significantly increase build time and the manufacturing costs.

Journal of Materials Processing Technology, vol. Authors Authors and affiliations J.