Physical simulation of controlled rolling and cooling of Nb-Ti microalloyed steel strip

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F18%3A10241424" target="_blank" >RIV/61989100:27360/18:10241424 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Physical simulation of controlled rolling and cooling of Nb-Ti microalloyed steel strip

Popis výsledku v původním jazyce

Reversible two-stand two-high laboratory mill TANDEM was used to study the effect of simulation parameters on the final properties of HSLA steel strip with 0.08 % C, 1.26 % Mn, 0.05 % Ti and 0.03 % Nb. The flat samples were heated at 1230 oC for 20 or 60 minutes and rolled from thickness of 24.0 mm to 3.2 mm by 6 passes. After finishing at approx. 868 oC, three different regimes of cooling were applied: free air cooling only, accelerated water cooling down to 560 oC followed by 1-hour stay in furnace at this temperature (simulating the conditions in industrial strip coil), or water spray cooling followed by free air cooling to room temperature. Ductility of the laboratory rolled products was almost constant. Yield stress and strength was only little influenced by simulation complexity after accelerated cooling, but these values were much lower after simple free air cooling (minus 80 MPa in average). After free air cooling, final equiaxed ferrite grain size was rather greater in the case of longer heating (5.2 vs 4.5 μm), but the microstructure was quite different after accelerated cooling when acicular ferrite occurs and pearlite disappears. The obtained results are important from the point of view of the physical simulation methodology.

Název v anglickém jazyce

Physical simulation of controlled rolling and cooling of Nb-Ti microalloyed steel strip

Popis výsledku anglicky

Reversible two-stand two-high laboratory mill TANDEM was used to study the effect of simulation parameters on the final properties of HSLA steel strip with 0.08 % C, 1.26 % Mn, 0.05 % Ti and 0.03 % Nb. The flat samples were heated at 1230 oC for 20 or 60 minutes and rolled from thickness of 24.0 mm to 3.2 mm by 6 passes. After finishing at approx. 868 oC, three different regimes of cooling were applied: free air cooling only, accelerated water cooling down to 560 oC followed by 1-hour stay in furnace at this temperature (simulating the conditions in industrial strip coil), or water spray cooling followed by free air cooling to room temperature. Ductility of the laboratory rolled products was almost constant. Yield stress and strength was only little influenced by simulation complexity after accelerated cooling, but these values were much lower after simple free air cooling (minus 80 MPa in average). After free air cooling, final equiaxed ferrite grain size was rather greater in the case of longer heating (5.2 vs 4.5 μm), but the microstructure was quite different after accelerated cooling when acicular ferrite occurs and pearlite disappears. The obtained results are important from the point of view of the physical simulation methodology.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1203" target="_blank" >LO1203: Regionální materiálově technologické výzkumné centrum - Program udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

METAL 2018 : conference proceedings : reviewed version : 27th International Conference on Metallurgy and Materials : May 23rd-25th 2018, Hotel Voronez I, Brno, Czech Republic, EU

ISBN

978-80-87294-84-0

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

5

Strana od-do

482-486

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

23. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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