Trip steel processing applied to low alloyed steel with chromium

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F16%3A43929214" target="_blank" >RIV/49777513:23210/16:43929214 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Trip steel processing applied to low alloyed steel with chromium

Popis výsledku v původním jazyce

Thermo-mechanical processing with various processing parameters was applied to 0.2%C-0.6%Mn-2S%i-0.8%Cr low alloyed high strength steel. The parameters were optimized to achieve final microstructures typical for TRIP (transformation induced plasticity) steels. These microstructures enable TRIP steels to reach very good combinations of ductility, formability and strength. TRIP steels based on C-Mn-Si concept have been mostly produced by rolling. Some other alloying elements have been also tested, for example aluminium, phosphorus or niobium, however little attention has been paid to chromium alloying. As chromium can not only increase hardenability, but also to refine the microstructure of the steel, it can contribute to further strengthening of TRIP steel. Thermo-mechanical processing used in this work consisted of various numbers of deformation steps carried out during the cooling from soaking temperatures to a bainite hold temperatures. In this way, around 10% of retained austenite has been retained in the final microstructure. The complex character of TRIP steel microstructures resulted in strengths in the range of 740MPa – 836MPa with ductility A5mm of 31-41%.

Název v anglickém jazyce

Trip steel processing applied to low alloyed steel with chromium

Popis výsledku anglicky

Thermo-mechanical processing with various processing parameters was applied to 0.2%C-0.6%Mn-2S%i-0.8%Cr low alloyed high strength steel. The parameters were optimized to achieve final microstructures typical for TRIP (transformation induced plasticity) steels. These microstructures enable TRIP steels to reach very good combinations of ductility, formability and strength. TRIP steels based on C-Mn-Si concept have been mostly produced by rolling. Some other alloying elements have been also tested, for example aluminium, phosphorus or niobium, however little attention has been paid to chromium alloying. As chromium can not only increase hardenability, but also to refine the microstructure of the steel, it can contribute to further strengthening of TRIP steel. Thermo-mechanical processing used in this work consisted of various numbers of deformation steps carried out during the cooling from soaking temperatures to a bainite hold temperatures. In this way, around 10% of retained austenite has been retained in the final microstructure. The complex character of TRIP steel microstructures resulted in strengths in the range of 740MPa – 836MPa with ductility A5mm of 31-41%.

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1502" target="_blank" >LO1502: Rozvoj Regionálního technologického institutu</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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