Machinability studies on laser-sintered iron-silicon carbide metal matrix composites using wire electrical discharge machining. (1st January 2012)

• Record Type: Journal Article
• Authors: Srinivasa, C.K.; Vinod, A.R.; Shashikumar, P.V.
• Is Part Of: International journal of material & product technology. Volume 43:Number 1/4(2012)
• Page Start: 68
• Page End: 83
• Publication Date: 2012-01-01
• Subjects: wire electrical discharge machining -- WEDM -- direct metal laser sintering -- DMLS -- metal matrix composites -- MMCs -- rapid prototyping -- RP -- laser; Manufacturing processes -- Periodicals; Materials -- Testing -- Periodicals; 620.11
• Languages: English
• ISSNs: 0268-1900

Abstract

This paper focuses on wire electrical discharge machining (WEDM) of iron and iron-1, 2, 3 and 5 wt.% SiC composites produced by direct metal laser sintering (DMLS) process. Discharge currents of 9, 13 and 18 A were adopted during machining while the wire speed was maintained at 90 mm/min. Results have indicated that discharge current, laser scan speed and extent of silicon carbide content in the composites, had a greater influence on the machining time and surface roughness of the machined surface.