DETERMINATION OF THE CRITICAL STRAIN FOR GRAIN COARSENING DURING HOT ROLLING
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F23%3A10254533" target="_blank" >RIV/61989100:27360/23:10254533 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
DETERMINATION OF THE CRITICAL STRAIN FOR GRAIN COARSENING DURING HOT ROLLING
Popis výsledku v původním jazyce
During recrystallisation annealing after cold forming, it has been repeatedly observed that there is a critical range of strains beyond which enormous coarsening of the statically recrystallized grain occurs. It can be assumed that similar behaviour can also be expected during hot rolling with static recrystallisation (SRX) between passes, especially in the first passes at the highest temperatures. This paper aims to experimentally determine the effect of strain on the grain size and to find the critical strain range for grain coarsening. For this purpose, a plain strain compression test (PSCT) was performed on the Hydrawedge II simulation module cooperating with the electrical and hydraulic systems of the HDS-20 simulator (Gleeble 3800). A total of 18 tests were performed for three different deformation temperatures (1000, 1050 and 1100 oC) and 5 different interpass times after deformation (1 to 200 s). Thanks to PC simulation using FEM in the Simufact Forming program, the equivalent strain distribution in the deformed sample was determined. Thanks to this, it was possible to determine the dependence of the size of the original austenite grain after deformation (obtained metallographically) on delay at a given temperature for a strain range of 0.02 to 0.51. Based on the experiments, graphs of the dependence of the size of the original austenite grain on the equivalent strain were compiled. The results showed that in the strain range of 0.05 to 0.15, there was an enormous grain coarsening, especially at the highest temperatures. The achieved results were compared with theoretical values obtained using calculations of SRX kinetics, recrystallized grain size and grain coarsening kinetics.
Název v anglickém jazyce
DETERMINATION OF THE CRITICAL STRAIN FOR GRAIN COARSENING DURING HOT ROLLING
Popis výsledku anglicky
During recrystallisation annealing after cold forming, it has been repeatedly observed that there is a critical range of strains beyond which enormous coarsening of the statically recrystallized grain occurs. It can be assumed that similar behaviour can also be expected during hot rolling with static recrystallisation (SRX) between passes, especially in the first passes at the highest temperatures. This paper aims to experimentally determine the effect of strain on the grain size and to find the critical strain range for grain coarsening. For this purpose, a plain strain compression test (PSCT) was performed on the Hydrawedge II simulation module cooperating with the electrical and hydraulic systems of the HDS-20 simulator (Gleeble 3800). A total of 18 tests were performed for three different deformation temperatures (1000, 1050 and 1100 oC) and 5 different interpass times after deformation (1 to 200 s). Thanks to PC simulation using FEM in the Simufact Forming program, the equivalent strain distribution in the deformed sample was determined. Thanks to this, it was possible to determine the dependence of the size of the original austenite grain after deformation (obtained metallographically) on delay at a given temperature for a strain range of 0.02 to 0.51. Based on the experiments, graphs of the dependence of the size of the original austenite grain on the equivalent strain were compiled. The results showed that in the strain range of 0.05 to 0.15, there was an enormous grain coarsening, especially at the highest temperatures. The achieved results were compared with theoretical values obtained using calculations of SRX kinetics, recrystallized grain size and grain coarsening kinetics.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
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OECD FORD obor
20500 - Materials engineering
Návaznosti výsledku
Projekt
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Návaznosti
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
METAL 2023 : 32nd International Conference on Metallurgy and Materials : conference proceedings : May 17–19, 2023, OREA Congress Hotel Brno, Czech Republic, EU
ISBN
978-80-88365-12-9
ISSN
2694-9296
e-ISSN
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Počet stran výsledku
6
Strana od-do
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Název nakladatele
Tanger
Místo vydání
Ostrava
Místo konání akce
Brno
Datum konání akce
17. 5. 2023
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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