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Statements

Subject Item
n2:RIV%2F49777513%3A23210%2F13%3A43920394%21RIV15-MSM-23210___
rdf:type
n7:Vysledek skos:Concept
dcterms:description
In accordance with the current trends of economic savings efforts are also being made in the field of heat treatments to find new procedures leading to a reduction of manufacturing costs [1-3]. One option is the ASR process (Accelerated Spheroidization and Refinement) [4]. This is a progressive method of thermo- mechanical treatment with incremental deformation at a temperature around Ac1. Application of ASR leads to a spheroidization structure with distributed carbides in significantly shorter times than with conventional heat treatments. The experiment deals with the optimization of the ASR process on 54SiCr steel with ferrite- pearlite initial microstructure including pearlite of lamellar morphology. The influence of strain and cold deformation on breaking the lamellar pearlite structure at a temperature of 700°C was determined. Then the influence of the length of the hold after deformation at temperatures of 680 and 700°C was described. It was found that increasing holding time from 100 - 1000s at the deformation temperature has a positive influence on the recrystallization and distribution of spheroidized carbides. The recrystallized structures with ferrite and uniformly distributed spheroidized carbides were obtained after gradual adjustment. Hardness of this structure was only about 260 HV10 in comparison with the initial lamellar structure with 283 HV10. In accordance with the current trends of economic savings efforts are also being made in the field of heat treatments to find new procedures leading to a reduction of manufacturing costs [1-3]. One option is the ASR process (Accelerated Spheroidization and Refinement) [4]. This is a progressive method of thermo- mechanical treatment with incremental deformation at a temperature around Ac1. Application of ASR leads to a spheroidization structure with distributed carbides in significantly shorter times than with conventional heat treatments. The experiment deals with the optimization of the ASR process on 54SiCr steel with ferrite- pearlite initial microstructure including pearlite of lamellar morphology. The influence of strain and cold deformation on breaking the lamellar pearlite structure at a temperature of 700°C was determined. Then the influence of the length of the hold after deformation at temperatures of 680 and 700°C was described. It was found that increasing holding time from 100 - 1000s at the deformation temperature has a positive influence on the recrystallization and distribution of spheroidized carbides. The recrystallized structures with ferrite and uniformly distributed spheroidized carbides were obtained after gradual adjustment. Hardness of this structure was only about 260 HV10 in comparison with the initial lamellar structure with 283 HV10.
dcterms:title
Optimization of Low-temperature Thermo-mechanical Treatment on 54SiCr Steel for Spheroidization of Carbides Optimization of Low-temperature Thermo-mechanical Treatment on 54SiCr Steel for Spheroidization of Carbides
skos:prefLabel
Optimization of Low-temperature Thermo-mechanical Treatment on 54SiCr Steel for Spheroidization of Carbides Optimization of Low-temperature Thermo-mechanical Treatment on 54SiCr Steel for Spheroidization of Carbides
skos:notation
RIV/49777513:23210/13:43920394!RIV15-MSM-23210___
n3:aktivita
n9:P
n3:aktivity
P(ED2.1.00/03.0093)
n3:dodaniDat
n17:2015
n3:domaciTvurceVysledku
n10:5090237 n10:7666551
n3:druhVysledku
n4:D
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
94476
n3:idVysledku
RIV/49777513:23210/13:43920394
n3:jazykVysledku
n20:eng
n3:klicovaSlova
ASR; 54SiCr; thermo-mechanical treatment; carbide spheroidization
n3:klicoveSlovo
n6:thermo-mechanical%20treatment n6:ASR n6:carbide%20spheroidization n6:54SiCr
n3:kontrolniKodProRIV
[DBF7E36900D2]
n3:mistoKonaniAkce
Brno
n3:mistoVydani
Ostrava
n3:nazevZdroje
METAL 2013
n3:obor
n14:JG
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n21:ED2.1.00%2F03.0093
n3:rokUplatneniVysledku
n17:2013
n3:tvurceVysledku
Kučerová, Ludmila Pileček, Vít
n3:typAkce
n19:WRD
n3:wos
000333163100063
n3:zahajeniAkce
2013-05-15+02:00
s:numberOfPages
8
n18:hasPublisher
Tanger s.r.o.
n11:isbn
978-80-87294-41-3
n15:organizacniJednotka
23210