Investigation of Selective Laser Melting Surface Alloyed Aluminium Metal Matrix Dispersive Reinforced Layers

9th International Conference on Tribology

Kamburov, V.V.^1 ; Dimitrova, R.B.^1 ; Kandeva, M.K.^2 ; Sofronov, Y.P.^1

Technical University of Sofia, Department of Materials Science and Technology, Sofia

1000, Bulgaria^1

Technical University of Sofia, Laboratory of Tribology, Faculty of Industrial Technologies, Sofia

1000, Bulgaria^2

关键词: Aluminium matrix composites;    Energy dispersive x ray microanalysis;    Laser surface alloying;    Nanoindentation tests;    Process parameters;    Selective laser melting;    SiC particles;    Wear resistant;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/295/1/012035/pdf
DOI  :  10.1088/1757-899X/295/1/012035

来源: IOP

【 摘 要 】

The aim of the paper is to investigate the improvement of mechanical properties and in particular wear resistance of laser surface alloyed dispersive reinforced thin layers produced by selective laser melting (SLM) technology. The wear resistance investigation of aluminium matrix composite layers in the conditions of dry friction surface with abrasive particles and nanoindentation tests were carried out. The process parameters (as scan speed) and their impact on the wear resistant layers have been evaluated. The alloyed layers containing metalized SiC particles were studied by Optical and Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray microanalysis (EDX). The obtained experimental results of the laser alloyed thin layers show significant development of their wear resistance and nanohardness due to the incorporated reinforced phase of electroless nickel coated SiC particles.