Investigation of recast and crack formation in laser trepanning drilling of CMSX-4 angled holes

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dc.contributor.authorIralal Morar, Nicolau
dc.contributor.authorRoy, Rajkumar
dc.contributor.authorMehnen, Jorn
dc.contributor.authorMarithumu, Sundar
dc.contributor.authorGray, Simon
dc.contributor.authorRoberts, Tracey
dc.contributor.authorNicholls, John R.
dc.date.accessioned2018-01-04T16:45:35Z
dc.date.available2018-01-04T16:45:35Z
dc.date.issued2018-01-03
dc.description.abstractThis paper presents an experimental investigation on the influences of laser trepanning drilling process parameters on the recast layer thickness and surface crack formation in CMSX-4 nickel-based superalloy angled holes. The effects of peak power, pulse frequency and the trepanning speed as input parameters were investigated in details by varying the laser drilling conditions using Taguchi orthogonal array-based design of experiment approach. Analysis of variance identifies the significant parameters affecting the output responses. It is found that the output responses are affected mainly by the peak power and trepanning speed. The experimental results reveal that the recast layer thickness increases with the increase of peak power and trepanning speed whereas the crack number density decreases with the increase of peak power only. Pulse frequency has no significant effect on both output responses within the range of values investigated. The knowledge gained in this parametric study could be used to improve the metallurgical characteristics of laser-drilled nickel-based acute angled holes.en_UK
dc.identifier.citationMorar NI, Roy R, Mehnen J, et al., Investigation of recast and crack formation in laser trepanning drilling of CMSX-4 angled holes. International Journal of Advanced Manufacturing Technology, Volume 95, April 2018, pp. 4059-4070en_UK
dc.identifier.cris19124312
dc.identifier.issn0268-3768
dc.identifier.urihttps://doi.org/10.1007/s00170-017-1481-9
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12844
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectLaser trepanning drillingen_UK
dc.subjectCMSX-4en_UK
dc.subjectRecast layeren_UK
dc.subjectSurface cracksen_UK
dc.titleInvestigation of recast and crack formation in laser trepanning drilling of CMSX-4 angled holesen_UK
dc.typeArticleen_UK

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