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Statements

Subject Item
n2:RIV%2F68407700%3A21340%2F13%3A00214354%21RIV14-MSM-21340___
rdf:type
skos:Concept n11:Vysledek
dcterms:description
Nickel super-alloys are widely used in aerospace as material for turbine blades. Casting can no longer meet the requirements for precision, hence, the castings are being ground or milled. In this contribution, a quality check of the milled surface by several surface integrity parameters is proposed with respect to the surface structural inhomogeneities caused by mutual effect of plastic deformations and thermal fields during the cutting process. Unsuitably chosen machining parameters lay grounds for cracks’ generation, growth and significantly reduced components’ lifetime. Surface integrity was described by macroscopic residual stresses, microstrains, grain sizes and phase composition. Mostly, favourable compressive surface residual stresses were observed in the cutting direction, grain sizes were distinctively smaller when the tool axis was perpendicular to the machined surface. During machining no precipitation of the detrimental σ phase took place. Nickel super-alloys are widely used in aerospace as material for turbine blades. Casting can no longer meet the requirements for precision, hence, the castings are being ground or milled. In this contribution, a quality check of the milled surface by several surface integrity parameters is proposed with respect to the surface structural inhomogeneities caused by mutual effect of plastic deformations and thermal fields during the cutting process. Unsuitably chosen machining parameters lay grounds for cracks’ generation, growth and significantly reduced components’ lifetime. Surface integrity was described by macroscopic residual stresses, microstrains, grain sizes and phase composition. Mostly, favourable compressive surface residual stresses were observed in the cutting direction, grain sizes were distinctively smaller when the tool axis was perpendicular to the machined surface. During machining no precipitation of the detrimental σ phase took place.
dcterms:title
XRD ANALYSES OF SURFACE INTEGRITY PARAMETERS AFTER 3 AXIS MILLING OF INCONEL 738LC XRD ANALYSES OF SURFACE INTEGRITY PARAMETERS AFTER 3 AXIS MILLING OF INCONEL 738LC
skos:prefLabel
XRD ANALYSES OF SURFACE INTEGRITY PARAMETERS AFTER 3 AXIS MILLING OF INCONEL 738LC XRD ANALYSES OF SURFACE INTEGRITY PARAMETERS AFTER 3 AXIS MILLING OF INCONEL 738LC
skos:notation
RIV/68407700:21340/13:00214354!RIV14-MSM-21340___
n11:predkladatel
n12:orjk%3A21340
n3:aktivita
n18:I
n3:aktivity
I
n3:dodaniDat
n5:2014
n3:domaciTvurceVysledku
n4:6426778 n4:4397576 n4:6539599
n3:druhVysledku
n15:D
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
117602
n3:idVysledku
RIV/68407700:21340/13:00214354
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Nickel super-alloys; residual stresses
n3:klicoveSlovo
n7:Nickel%20super-alloys n7:residual%20stresses
n3:kontrolniKodProRIV
[3E77F2FB0DB6]
n3:mistoKonaniAkce
Zuberec
n3:mistoVydani
Žilina
n3:nazevZdroje
Degradacia konštrukčných materiálov
n3:obor
n21:JG
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
7
n3:rokUplatneniVysledku
n5:2013
n3:tvurceVysledku
Čapek, Jiří Kolařík, Kamil Beránek, Libor Vyskočil, Z. Tomíček, Jan Kyncl, Jiří Pala, Zdeněk
n3:typAkce
n10:WRD
n3:zahajeniAkce
2013-09-04+02:00
s:numberOfPages
6
n6:hasPublisher
Žilinská univerzita v Žiline. Strojnícka fakulta
n14:isbn
978-80-554-0741-8
n16:organizacniJednotka
21340