Influence of processing parameters of medium manganese steel with 5% mn on the development of mechanical properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F22%3A43966436" target="_blank" >RIV/49777513:23210/22:43966436 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/metal/2022/4481-influence-of-processing-parameters-of-medium-manganese-steel-with-5-mn-on-development-of-mechanical-properties" target="_blank" >https://www.confer.cz/metal/2022/4481-influence-of-processing-parameters-of-medium-manganese-steel-with-5-mn-on-development-of-mechanical-properties</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2022.4481" target="_blank" >10.37904/metal.2022.4481</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of processing parameters of medium manganese steel with 5% mn on the development of mechanical properties

Popis výsledku v původním jazyce

Medium manganese steels belong to the group of third generation high-strength steels. These steels show an excellent combination of strength and ductility. Their manganese content is around 3 to 12%. After hot forming, their structure is mostly formed by a martensitic matrix. During intercritical annealing, martensite is reversed to austenite. The choice of the correct alloying and parameters of intercritical annealing, especially the heating temperature, leads to obtaining a sufficiently stable retained austenite, which significantly affects the mechanical properties. Retained austenite during cold deformation shows the so-called TRIP effect and contributes to significant deformation strengthening of the material. Medium manganese steel with 0.2% C, 5% Mn and 3% Al was chosen for the experiment and subjected to various intercritical annealing regimes after hot forming. To increase the stability of the retained austenite, isothermal hold at different temperatures was performed in the bainitic transformation region. To verify the effect of deformation, a variant with inserted incremental deformation during cooling was also tested. After processing, martensitic structures were obtained with varying portions of bainite, which was supported by the holding time at 425°C, ferrite and residual austenite. The yield strength reached up to 1940 MPa with an elongation of about 10%.

Název v anglickém jazyce

Influence of processing parameters of medium manganese steel with 5% mn on the development of mechanical properties

Popis výsledku anglicky

Medium manganese steels belong to the group of third generation high-strength steels. These steels show an excellent combination of strength and ductility. Their manganese content is around 3 to 12%. After hot forming, their structure is mostly formed by a martensitic matrix. During intercritical annealing, martensite is reversed to austenite. The choice of the correct alloying and parameters of intercritical annealing, especially the heating temperature, leads to obtaining a sufficiently stable retained austenite, which significantly affects the mechanical properties. Retained austenite during cold deformation shows the so-called TRIP effect and contributes to significant deformation strengthening of the material. Medium manganese steel with 0.2% C, 5% Mn and 3% Al was chosen for the experiment and subjected to various intercritical annealing regimes after hot forming. To increase the stability of the retained austenite, isothermal hold at different temperatures was performed in the bainitic transformation region. To verify the effect of deformation, a variant with inserted incremental deformation during cooling was also tested. After processing, martensitic structures were obtained with varying portions of bainite, which was supported by the holding time at 425°C, ferrite and residual austenite. The yield strength reached up to 1940 MPa with an elongation of about 10%.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF19_073%2F0016931" target="_blank" >EF19_073/0016931: Zvyšování kvality interních grantových schémat na ZČU</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings 31st International Conference on Metallurgy and Materials

ISBN

978-80-88365-06-8

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

413-418

Název nakladatele

TANGER Ltd.

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

18. 5. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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