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Statements

Subject Item
n2:RIV%2F49777513%3A23210%2F12%3A43915368%21RIV14-MSM-23210___
rdf:type
skos:Concept n19:Vysledek
dcterms:description
The ever increasing requirements for mechanical properties of steels and the need for low purchasing cost compels manufacturers to develop new unconventional types of material microstructures that exhibit high strength and adequate ductility at the same time. In order to achieve such goals, one has to rely on unconventional heat treatment or thermomechanical treatment methods. One such method is Q-P processing that can be employed for treating cost-effective AHSS steels. In order to find the extent of changes in mechanical properties of microstructures produced by Q-P processing that take place either during the following warm forming or in the course of heating to moderately elevated temperatures, new measuring methods must be developed and deployed to quantify such changes precisely. The demand for measuring mechanical properties under conditions identical to those of a real-world manufacturing process is very common. A newly-developed testing method for measuring stress-strain curves with a short heating time in the order of seconds may serve as an example. It requires that a homogeneous microstructure is present throughout a testing body, and thus uniform temperature is achieved in the gauge part of the test bar. Dynamic tension test at a strain rate of 30 s-1 was performed at these conditions. This method has a distinct feature in that the measuring system consists of a highly dynamic testing device, accurate dynamic heating equipment, a set of strain gauges and a system of optical detectors. Under the above conditions, specimens of high-strength low-alloyed steel were tested in three different states: as-hot rolled condition, Q-P-processed state and as-quenched and tempered. Dynamic properties of the material were measured at 25 °C and 425 °C. The ever increasing requirements for mechanical properties of steels and the need for low purchasing cost compels manufacturers to develop new unconventional types of material microstructures that exhibit high strength and adequate ductility at the same time. In order to achieve such goals, one has to rely on unconventional heat treatment or thermomechanical treatment methods. One such method is Q-P processing that can be employed for treating cost-effective AHSS steels. In order to find the extent of changes in mechanical properties of microstructures produced by Q-P processing that take place either during the following warm forming or in the course of heating to moderately elevated temperatures, new measuring methods must be developed and deployed to quantify such changes precisely. The demand for measuring mechanical properties under conditions identical to those of a real-world manufacturing process is very common. A newly-developed testing method for measuring stress-strain curves with a short heating time in the order of seconds may serve as an example. It requires that a homogeneous microstructure is present throughout a testing body, and thus uniform temperature is achieved in the gauge part of the test bar. Dynamic tension test at a strain rate of 30 s-1 was performed at these conditions. This method has a distinct feature in that the measuring system consists of a highly dynamic testing device, accurate dynamic heating equipment, a set of strain gauges and a system of optical detectors. Under the above conditions, specimens of high-strength low-alloyed steel were tested in three different states: as-hot rolled condition, Q-P-processed state and as-quenched and tempered. Dynamic properties of the material were measured at 25 °C and 425 °C.
dcterms:title
MEASUREMENT OF PROPERTIES OF HIGH-STRENGTH LOW-ALLOYED STEEL UNDER DYNAMIC LOAD IN REAL-WORLD CONDITIONS OF DEFORMATION AT ELEVATED TEMPERATURES MEASUREMENT OF PROPERTIES OF HIGH-STRENGTH LOW-ALLOYED STEEL UNDER DYNAMIC LOAD IN REAL-WORLD CONDITIONS OF DEFORMATION AT ELEVATED TEMPERATURES
skos:prefLabel
MEASUREMENT OF PROPERTIES OF HIGH-STRENGTH LOW-ALLOYED STEEL UNDER DYNAMIC LOAD IN REAL-WORLD CONDITIONS OF DEFORMATION AT ELEVATED TEMPERATURES MEASUREMENT OF PROPERTIES OF HIGH-STRENGTH LOW-ALLOYED STEEL UNDER DYNAMIC LOAD IN REAL-WORLD CONDITIONS OF DEFORMATION AT ELEVATED TEMPERATURES
skos:notation
RIV/49777513:23210/12:43915368!RIV14-MSM-23210___
n19:predkladatel
n20:orjk%3A23210
n3:aktivita
n21:S n21:P
n3:aktivity
P(GPP107/12/P960), S
n3:dodaniDat
n15:2014
n3:domaciTvurceVysledku
n11:7775334 n11:6179444 n11:7666551 n11:2610078
n3:druhVysledku
n16:D
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
148915
n3:idVysledku
RIV/49777513:23210/12:43915368
n3:jazykVysledku
n17:eng
n3:klicovaSlova
measurement; strain rate; ductility; strength; Stress
n3:klicoveSlovo
n13:measurement n13:ductility n13:Stress n13:strain%20rate n13:strength
n3:kontrolniKodProRIV
[F03AD4511DD0]
n3:mistoKonaniAkce
Brno
n3:mistoVydani
Ostrava
n3:nazevZdroje
METAL 2012
n3:obor
n12:JG
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n7:GPP107%2F12%2FP960
n3:rokUplatneniVysledku
n15:2012
n3:tvurceVysledku
Kučerová, Ludmila Jirková, Hana Jeníček, Štěpán Mašek, Bohuslav
n3:typAkce
n18:WRD
n3:wos
000318506500109
n3:zahajeniAkce
2012-05-23+02:00
s:numberOfPages
6
n22:hasPublisher
TANGER
n8:isbn
978-80-87294-31-4
n14:organizacniJednotka
23210