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Statements

Subject Item
n2:RIV%2F26316919%3A_____%2F11%3A%230000283%21RIV12-GA0-26316919
rdf:type
n9:Vysledek skos:Concept
dcterms:description
The current efforts in production of low-alloyed steels are aimed at achieving high ultimate and yield strengths, while maintaining sufficient elongation and good weldability in these materials. Among advanced heat treatment processes capable of reaching this goal, there is also the Q-P process (Quenching and Partitioning). The process consists in rapid quenching between the Ms and Mf temperatures in order to prevent full martensitic transformation. The immediately following heating leads to tempering of the martensite and to diffusion of excess carbon from martensite to retained austenite. The aim of the Q-P process is to produce very fine martensite microstructure with retained austenite between martensite plates. The experimental programme was carried out on a high-strength low-alloyed steel containing 0.2% carbon and a higher amount of silicon about 1.5%. Higher silicon content in the microstructure contributes to stabilization of retained austenite by suppressing formation of carbides. The paper is aimed at possibility of the Q-P process optimization with the use of quenching dilatometer. The experimental material is CMnSiMo steel. Conventional process optimization consists of standard samples treatment in laboratory furnaces and baths. This procedure can be time consuming with higher requirements on the experimental material. Therefore, it was proposed that the Q-P process optimization can be done with the use of quenching dilatometer and in this way the development of new procedures can be accelerated. Q-P processes were conducted in the standard way and with the aid of a dilatometer. Comparison of the obtained results provided by the standard procedure and by the procedure using the quenching dilatometer showed very similar results. On the basis of the obtained results, it can be concluded that the quenching dilatometer can be a powerful tool in Q-P processes optimization. The current efforts in production of low-alloyed steels are aimed at achieving high ultimate and yield strengths, while maintaining sufficient elongation and good weldability in these materials. Among advanced heat treatment processes capable of reaching this goal, there is also the Q-P process (Quenching and Partitioning). The process consists in rapid quenching between the Ms and Mf temperatures in order to prevent full martensitic transformation. The immediately following heating leads to tempering of the martensite and to diffusion of excess carbon from martensite to retained austenite. The aim of the Q-P process is to produce very fine martensite microstructure with retained austenite between martensite plates. The experimental programme was carried out on a high-strength low-alloyed steel containing 0.2% carbon and a higher amount of silicon about 1.5%. Higher silicon content in the microstructure contributes to stabilization of retained austenite by suppressing formation of carbides. The paper is aimed at possibility of the Q-P process optimization with the use of quenching dilatometer. The experimental material is CMnSiMo steel. Conventional process optimization consists of standard samples treatment in laboratory furnaces and baths. This procedure can be time consuming with higher requirements on the experimental material. Therefore, it was proposed that the Q-P process optimization can be done with the use of quenching dilatometer and in this way the development of new procedures can be accelerated. Q-P processes were conducted in the standard way and with the aid of a dilatometer. Comparison of the obtained results provided by the standard procedure and by the procedure using the quenching dilatometer showed very similar results. On the basis of the obtained results, it can be concluded that the quenching dilatometer can be a powerful tool in Q-P processes optimization.
dcterms:title
Q-P Process Optimization With the Use of Quenching Dilatometer Q-P Process Optimization With the Use of Quenching Dilatometer
skos:prefLabel
Q-P Process Optimization With the Use of Quenching Dilatometer Q-P Process Optimization With the Use of Quenching Dilatometer
skos:notation
RIV/26316919:_____/11:#0000283!RIV12-GA0-26316919
n9:predkladatel
n10:ico%3A26316919
n4:aktivita
n7:P
n4:aktivity
P(GA106/09/1968)
n4:cisloPeriodika
Volume 18
n4:dodaniDat
n11:2012
n4:domaciTvurceVysledku
n17:1173529 n17:6585833 n17:6882072 n17:2183803
n4:druhVysledku
n5:J
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n8:predkladatel
n4:idSjednocenehoVysledku
225351
n4:idVysledku
RIV/26316919:_____/11:#0000283
n4:jazykVysledku
n18:eng
n4:klicovaSlova
Q-P process, dilatometer, low-alloyed steel
n4:klicoveSlovo
n14:dilatometer n14:low-alloyed%20steel n14:Q-P%20process
n4:kodStatuVydavatele
CN - Čínská lidová republika
n4:kontrolniKodProRIV
[D5CCF058D6C7]
n4:nazevZdroje
Journal of Iron and Steel Research International
n4:obor
n12:JP
n4:pocetDomacichTvurcuVysledku
4
n4:pocetTvurcuVysledku
4
n4:projekt
n15:GA106%2F09%2F1968
n4:rokUplatneniVysledku
n11:2011
n4:tvurceVysledku
Motyčka, Petr Hauserová, Daniela Nový, Zbyšek Džugan, Ján
n4:wos
000292229000071
s:issn
1006-706X
s:numberOfPages
5