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Surface characterization of particle reinforced aluminum-matrix composites finished by pulsed electrochemical machining

Oberflächencharakterisierung von partikelverstärkter Aluminium-Matrix-Komposite endbearbeitet durch gepulste elektrochemische Bearbeitung
: Hackert-Oschätzchen, Matthias; Lehnert, Norbert; Martin, Andre; Meichsner, Gunnar; Schubert, Andreas

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Procedia CIRP 45 (2016), pp.351-354
ISSN: 2212-8271
Conference on Surface Integrity (CSI) <3, 2016, Charlotte/NC>
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IWU ()
pulsed electrochemical machining; micro machining; Particle Reinforced Aluminum; ECM

Aluminum matrix composites (AMCs) are difficult to machine conventionally. Pulsed Electrochemical Machining (PECM) is an alternative method to machine AMCs. Metals can be machined without contact, independent of material hardness and without mechanical or thermal impact. During the process no tool wear occurs. The AMCs consist of an aluminum matrix, which is easily to machine with PECM, and SiC-particles, which cannot be dissolved during the electrochemical machining process applying neutral electrolytes. This combination leads to a special behavior of dissolution and anodization. In this study, the influence on the surface layer, caused by Pulsed Electrochemical Machining of AMCs, is analyzed.