THE INFLUENCE OF NIOBIUM ON THE RESULTING STRUCTURE OF TRIP STEELS DURING THE CONTINUOUS COOLING
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F18%3A43953020" target="_blank" >RIV/49777513:23210/18:43953020 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.metalconference.eu/cz/sbornik-metal-2018/" target="_blank" >https://www.metalconference.eu/cz/sbornik-metal-2018/</a>
DOI - Digital Object Identifier
—
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
THE INFLUENCE OF NIOBIUM ON THE RESULTING STRUCTURE OF TRIP STEELS DURING THE CONTINUOUS COOLING
Popis výsledku v původním jazyce
High strength multiphase TRIP steels are very often used as structural materials, especially in the automotive industry. Due to their ability to absorb energy during the impact, they are used for safety components of the car body. These parts can be produced by a hot stamping process, which has the advantage of using lower forming forces and a smaller spring back effect. The problem during heat treatment of TRIP steels is the holding time in the region of bainitic transformation, which facilitates bainite formation and stabilization of retained austenite. In the present study, two low-alloy TRIP steels with and without niobium were chosen. Physical simulation was employed to test an alternative route without an isothermal hold during cooling after hot stamping. Several continuous cooling profiles from the tool temperature were applied. The results were compared with isothermal processing in the region of bainitic transformation. Mixed structures consisting of bainite, martensite, ferrite and retained austenite were obtained for both steels. The ultimate strength reached more than 900 MPa with the elongation A20mm over 15 %.
Název v anglickém jazyce
THE INFLUENCE OF NIOBIUM ON THE RESULTING STRUCTURE OF TRIP STEELS DURING THE CONTINUOUS COOLING
Popis výsledku anglicky
High strength multiphase TRIP steels are very often used as structural materials, especially in the automotive industry. Due to their ability to absorb energy during the impact, they are used for safety components of the car body. These parts can be produced by a hot stamping process, which has the advantage of using lower forming forces and a smaller spring back effect. The problem during heat treatment of TRIP steels is the holding time in the region of bainitic transformation, which facilitates bainite formation and stabilization of retained austenite. In the present study, two low-alloy TRIP steels with and without niobium were chosen. Physical simulation was employed to test an alternative route without an isothermal hold during cooling after hot stamping. Several continuous cooling profiles from the tool temperature were applied. The results were compared with isothermal processing in the region of bainitic transformation. Mixed structures consisting of bainite, martensite, ferrite and retained austenite were obtained for both steels. The ultimate strength reached more than 900 MPa with the elongation A20mm over 15 %.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/TG02010011" target="_blank" >TG02010011: Podpora komerčních příležitostí ZČU</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2018
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
Conference Proceedings - METAL 2018 - 27th International Conference on Metallurgy and Materials
ISBN
978-80-87294-84-0
ISSN
—
e-ISSN
neuvedeno
Počet stran výsledku
6
Strana od-do
712-717
Název nakladatele
TANGER Ltd., Keltickova 62, 710 00 Ostrava, Czech Republic, EU
Místo vydání
Ostrava
Místo konání akce
Brno, Czech Republic
Datum konání akce
23. 5. 2018
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
—