INFLUENCE OF SILICON AND MOLYBDENUM ON STRENGTH AND PLASTICITY OF 0.1C STEEL SHEET

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F24%3AN0000018" target="_blank" >RIV/26316919:_____/24:N0000018 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/metal/2023/read/4708-influence-of-si-and-mo-on-strength-and-plasticity-of-0-1c-steel-sheet.pdf" target="_blank" >https://www.confer.cz/metal/2023/read/4708-influence-of-si-and-mo-on-strength-and-plasticity-of-0-1c-steel-sheet.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2023.4708" target="_blank" >10.37904/metal.2023.4708</a>

Jazyk výsledku

angličtina

Název v původním jazyce

INFLUENCE OF SILICON AND MOLYBDENUM ON STRENGTH AND PLASTICITY OF 0.1C STEEL SHEET

Popis výsledku v původním jazyce

Low carbon high-strength steel sheets are in scope of the material research mainly used as structural materials for automotive industry. Cold forming is the most prominent technology of achieving the final shape of the parts made of thin sheet. This requires sufficient plasticity of the material so that the forming procedure can be performed without sheet fracture. High strength steels are attractive due to possibility of weight saving; however, their higher strength comes with a reduction of plasticity. Especially widely used dual and complex phase steels, providing an exceptional combination of plasticity and strength, are not performing well during forming due to their susceptibility to an edge fracture. It emerged that this feature is caused by alternation of hard martensite and soft ferrite in their structure causing crack propagation by separation of these phases. This experiment is aimed at development of a high-strength low-carbon steel sheet of a homogeneous low-tempered martensite microstructure with a tensile strength in an interval of 1000-1200 MPa. This strength is comparable with the highest grades of dual and complex-phase steels. However, the homogeneous microstructure gives an advantage in the formability, which can be crucial factor for the cold forming operation. Influence of different concentration of Si and Mo was examined by tensile test and hole expansion test for 0.8 mm thick sheets.

Název v anglickém jazyce

INFLUENCE OF SILICON AND MOLYBDENUM ON STRENGTH AND PLASTICITY OF 0.1C STEEL SHEET

Popis výsledku anglicky

Low carbon high-strength steel sheets are in scope of the material research mainly used as structural materials for automotive industry. Cold forming is the most prominent technology of achieving the final shape of the parts made of thin sheet. This requires sufficient plasticity of the material so that the forming procedure can be performed without sheet fracture. High strength steels are attractive due to possibility of weight saving; however, their higher strength comes with a reduction of plasticity. Especially widely used dual and complex phase steels, providing an exceptional combination of plasticity and strength, are not performing well during forming due to their susceptibility to an edge fracture. It emerged that this feature is caused by alternation of hard martensite and soft ferrite in their structure causing crack propagation by separation of these phases. This experiment is aimed at development of a high-strength low-carbon steel sheet of a homogeneous low-tempered martensite microstructure with a tensile strength in an interval of 1000-1200 MPa. This strength is comparable with the highest grades of dual and complex-phase steels. However, the homogeneous microstructure gives an advantage in the formability, which can be crucial factor for the cold forming operation. Influence of different concentration of Si and Mo was examined by tensile test and hole expansion test for 0.8 mm thick sheets.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF16_019%2F0000836" target="_blank" >EF16_019/0000836: Výzkum pokročilých ocelí s unikátními vlastnostmi</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

32ND INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS, METAL 2023

ISBN

978-80-88365-12-9

ISSN

2694-9296

e-ISSN

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Počet stran výsledku

6

Strana od-do

321-326

Název nakladatele

TANGER Ltd

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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