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Statements

Subject Item
n2:RIV%2F47718684%3A_____%2F15%3A%230000595%21RIV15-TA0-47718684
rdf:type
n13:Vysledek skos:Concept
dcterms:description
A deep cryogenic heat treatment (DCT) was applied to X37CrMoV5 steel, which included soaking at -160°C for 12 and 30 hours followed by tempering at 180°C. Microstructures were compared with those after conventional heat treatment (HT). Microstructures with conspicuous dendritic segregation were observed in all specimens. After HT coarser and finer tempered martensite occurred in depleted and enriched areas of carbon and alloying elements respectively. Coarse molybdenum and vanadium carbides, fine secondary Fe2MoC carbides and retained austenite were identified after HT. Deep freezing resulted in microstructure refinement, transformation of retained austenite into twinned martensite, spinodal decomposition of martensite plates and precipitation of semicoherent eta-carbide. The mechanism of eta-carbide precipitation was discussed. Wear rate was measured using pin-on-disc test. The best results were obtained after DCT with cryosoaking for 12 hours. A deep cryogenic heat treatment (DCT) was applied to X37CrMoV5 steel, which included soaking at -160°C for 12 and 30 hours followed by tempering at 180°C. Microstructures were compared with those after conventional heat treatment (HT). Microstructures with conspicuous dendritic segregation were observed in all specimens. After HT coarser and finer tempered martensite occurred in depleted and enriched areas of carbon and alloying elements respectively. Coarse molybdenum and vanadium carbides, fine secondary Fe2MoC carbides and retained austenite were identified after HT. Deep freezing resulted in microstructure refinement, transformation of retained austenite into twinned martensite, spinodal decomposition of martensite plates and precipitation of semicoherent eta-carbide. The mechanism of eta-carbide precipitation was discussed. Wear rate was measured using pin-on-disc test. The best results were obtained after DCT with cryosoaking for 12 hours.
dcterms:title
Microstructure of Tool Steel X37CrMoV5 after Cryogenic Treatment and its Effect on Wear Resistance Microstructure of Tool Steel X37CrMoV5 after Cryogenic Treatment and its Effect on Wear Resistance
skos:prefLabel
Microstructure of Tool Steel X37CrMoV5 after Cryogenic Treatment and its Effect on Wear Resistance Microstructure of Tool Steel X37CrMoV5 after Cryogenic Treatment and its Effect on Wear Resistance
skos:notation
RIV/47718684:_____/15:#0000595!RIV15-TA0-47718684
n3:aktivita
n8:P
n3:aktivity
P(TE01020118)
n3:cisloPeriodika
2015
n3:dodaniDat
n15:2015
n3:domaciTvurceVysledku
n4:8297398
n3:druhVysledku
n10:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
280
n3:idVysledku
RIV/47718684:_____/15:#0000595
n3:jazykVysledku
n12:eng
n3:klicovaSlova
tool steel, cryogenic treatment, microstructure, transmission electron microscopy, wear resistance
n3:klicoveSlovo
n9:transmission%20electron%20microscopy n9:tool%20steel n9:microstructure n9:cryogenic%20treatment n9:wear%20resistance
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[D0D1F1443045]
n3:nazevZdroje
Key engineering materials
n3:obor
n14:JG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:projekt
n6:TE01020118
n3:rokUplatneniVysledku
n15:2015
n3:svazekPeriodika
647
n3:tvurceVysledku
Nižanská, Jana Šuchmann, Pavel Jandová, Dagmar
s:issn
1662-9795
s:numberOfPages
15