Characterization of microstructural effects in a percussion laser-drilled powder metallurgy Ni-based superalloy

Garofano, Jacquelynn; Marcus, Harris L.; Aindow, Mark

doi:10.1007/s10853-008-3177-x

Cited by 9 publications

(2 citation statements)

References 19 publications

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“…It was observed that the ablated area increases with the increase of pulse energy but after reaching the value of 200 mJ the increase in ablation stops and therefore the pulse repetition rate must be increased to increase the ablation. Electron microscopy study for percussion laser drilled powder metallurgy Ni-based superalloy has been presented by Garofano et al [109]. They found that no change in the microstructure of the base metal take place at the interface between the base metal and the resolidified layer but distinct presence of sub-layers within the recast layer has been observed.…”

Section: Metalsmentioning

confidence: 99%

Laser Beam MicroMachining (LBMM) – A review

Mishra¹,

Yadava

2015

Optics and Lasers in Engineering

225

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Section: Metalsmentioning

confidence: 99%

Laser Beam MicroMachining (LBMM) – A review

Mishra¹,

Yadava

2015

Optics and Lasers in Engineering

225

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“…heating, melting, vaporisation and melt ejection. Further, in an attempt to understand the process better, some researchers have used observation techniques such as streak photography [11], field emission scanning electron microscope [12,13] and high-speed cameras [14]todescribethe material removal mechanism and surface characteristics during the laser drilling.…”

Section: Introductionmentioning

confidence: 99%

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

Morar

Roy

Mehnen

et al. 2018

Int J Adv Manuf Technol

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This 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.

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Evaluation of different drilling quality and fatigue life prediction of nickel-based superalloy using equivalent initial flaw size

Zhou

et al. 2021

Engineering Fracture Mechanics

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Characterization of microstructural effects in a percussion laser-drilled powder metallurgy Ni-based superalloy

Cited by 9 publications

References 19 publications

Laser Beam MicroMachining (LBMM) – A review

Laser Beam MicroMachining (LBMM) – A review

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

Evaluation of different drilling quality and fatigue life prediction of nickel-based superalloy using equivalent initial flaw size

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