Macroscopic and microscopic phenomena of electro-discharge machined steel surfaces: An experimental investigation

Mamalis, AG; Vosniakos, GC; Vaxevanidis, NM; Prohaszka, J

dc.contributor.author	Mamalis, AG	en
dc.contributor.author	Vosniakos, GC	en
dc.contributor.author	Vaxevanidis, NM	en
dc.contributor.author	Prohaszka, J	en
dc.date.accessioned	2014-03-01T01:06:54Z
dc.date.available	2014-03-01T01:06:54Z
dc.date.issued	1987	en
dc.identifier.issn	0378-3804	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9665
dc.subject	Electro Discharge Machining	en
dc.subject.classification	Engineering, Mechanical	en
dc.title	Macroscopic and microscopic phenomena of electro-discharge machined steel surfaces: An experimental investigation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0378-3804(87)90047-7	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0378-3804(87)90047-7	en
heal.language	English	en
heal.publicationDate	1987	en
heal.abstract	Electro-discharge machining is a thermal process with a complex metal removal mechanism, involving the formation of a plasma channel between the tool and workpiece electrodes, melting and evaporation action and shock waves, resulting in phase changes, tensile residual stresses, cracking and metallurgical transformation. These properties determine the operational behaviour of machined parts and are included in the term ""surface integrity"". Experimental results pertaining to the physico-chemical changes occurring during electro-discharge machining of steel (structural, medium-carbon and alloyed steels) surfaces are reported in this paper. Surface morphology and finish are assessed and correlated with overall process parameters and metal removal rates. Metallurgical transformations and new structures, surface damage in the form of cracking and ""white layer"" formation, microhardness variations and residual stress patterns are quantitatively and qualitatively examined and discussed. The results confirm the inherent complexity of the process, as well as the assumptions that must be made in order to achieve acceptable predictions of the mechanical and physico-chemical characteristics of the machined surfaces. © 1987.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Mechanical Working Technology	en
dc.identifier.doi	10.1016/0378-3804(87)90047-7	en
dc.identifier.isi	ISI:A1987L554700007	en
dc.identifier.volume	15	en
dc.identifier.issue	3	en
dc.identifier.spage	335	en
dc.identifier.epage	356	en