SLC Technologies for Ferroalloy Part Surface Modification

Abstract:

Experiments on selective laser sintering of iron based alloy and nano-Al₂O₃ ceramic bulk materials are carried out and effect of sintering parameters on the process is analyzed systematically. A reasonable selective laser sintering technique which can be used to fabricate parts with free shape is obtained and verified with a multilayer sintering experiment. The component and the microstructure of the sintering production is tested. The influences of parameters and the amount of nano-Al₂O₃ on microstructure and microhardness of the sintering parts are studied. Laser sintering iron-based alloy experiments show that: microhardness has been noticeably improved. It is indicated that with the selective laser sintering technique obtained above, nano-alumina can be processed to manufacture three-dimension parts with free shape. With the addition of Al₂O₃ and the increase of composite parts of the grain gradually thinning, microhardness gradually improved nanocomposite parts for the microstructure of the dendrite skeleton-shaped crystal and the plane together, the internal Al₂O₃ dispersion organizations to strengthen the implicit crystal martensite and ferrite mixed organizations.

• Periodical: Advanced Materials Research (Volumes 941-944)
• Pages: 2194-2197
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.941-944.2194
• Online since: June 2014
• Authors: Jie Liu
• Keywords: SLC, Surface Modification

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