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

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Physical simulation of controlled rolling and cooling of Nb-Ti microalloyed steel strip
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/LO1203" target="_blank" >LO1203: Regional Materials Science and Technology Centre - Feasibility Program</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
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
Number of pages
5
Pages from-to
482-486
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
May 23, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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