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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F11%3A00361261%21RIV12-AV0-68081723
rdf:type
skos:Concept n9:Vysledek
dcterms:description
The samples made from the Vanadis 6 PM ledeburitic tool steel were surface machined to different quality and heat treated by standard regime of the processing. Three point bending tests were carried out on processed samples. It was found that the flexural strength decreased with decreasing surface quality. The lowering of flexural strength has been accompanied with the decrease of the plastic component of plastic straining preceeding to fracture initiation (work of fracture) of the material. It indicates that the surface roughness leads to the crack initiation before a larger plastic deformation of the material can be developed. Based on the results it can be suggested that to prevent the cracking of tools in the practice it is essential to make a surfaře machining (grinding, lapping, polishing) to as high quality as possible. The samples made from the Vanadis 6 PM ledeburitic tool steel were surface machined to different quality and heat treated by standard regime of the processing. Three point bending tests were carried out on processed samples. It was found that the flexural strength decreased with decreasing surface quality. The lowering of flexural strength has been accompanied with the decrease of the plastic component of plastic straining preceeding to fracture initiation (work of fracture) of the material. It indicates that the surface roughness leads to the crack initiation before a larger plastic deformation of the material can be developed. Based on the results it can be suggested that to prevent the cracking of tools in the practice it is essential to make a surfaře machining (grinding, lapping, polishing) to as high quality as possible.
dcterms:title
Fracture behaviour of P/M Cr-V ledeburitic steel with different surface roughness Fracture behaviour of P/M Cr-V ledeburitic steel with different surface roughness
skos:prefLabel
Fracture behaviour of P/M Cr-V ledeburitic steel with different surface roughness Fracture behaviour of P/M Cr-V ledeburitic steel with different surface roughness
skos:notation
RIV/68081723:_____/11:00361261!RIV12-AV0-68081723
n9:predkladatel
n10:ico%3A68081723
n3:aktivita
n7:P n7:Z
n3:aktivity
P(GA101/09/1821), Z(AV0Z20410507)
n3:cisloPeriodika
18
n3:dodaniDat
n15:2012
n3:domaciTvurceVysledku
n6:5798574
n3:druhVysledku
n5:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
200285
n3:idVysledku
RIV/68081723:_____/11:00361261
n3:jazykVysledku
n13:eng
n3:klicovaSlova
PM Cr-V ledeburitic steel; Microstructure; Surface roughness; Three point bending strength; Fractography
n3:klicoveSlovo
n4:Microstructure n4:Surface%20roughness n4:PM%20Cr-V%20ledeburitic%20steel n4:Three%20point%20bending%20strength n4:Fractography
n3:kodStatuVydavatele
SK - Slovenská republika
n3:kontrolniKodProRIV
[DE0E01DA6E2A]
n3:nazevZdroje
Materiálové inžinierstvo - Materials Engineering
n3:obor
n16:JG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:projekt
n14:GA101%2F09%2F1821
n3:rokUplatneniVysledku
n15:2011
n3:svazekPeriodika
-
n3:tvurceVysledku
Jurči, P. Dlouhý, Ivo
n3:zamer
n17:AV0Z20410507
s:issn
1335-0803
s:numberOfPages
8