Comparison of thermo-mechanical treatment of C-Mn-Si-Nb and C-Mn-Si-Al-Nb TRIP steels

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F17%3A43933012" target="_blank" >RIV/49777513:23210/17:43933012 - isvavai.cz</a>

Výsledek na webu

<a href="https://ac.els-cdn.com/S1877705817357442/1-s2.0-S1877705817357442-main.pdf?_tid=49e6cd6e-faff-11e7-9999-00000aab0f26&acdnat=1516136182_829dd643269d82adc5eefd2f567887a3" target="_blank" >https://ac.els-cdn.com/S1877705817357442/1-s2.0-S1877705817357442-main.pdf?_tid=49e6cd6e-faff-11e7-9999-00000aab0f26&acdnat=1516136182_829dd643269d82adc5eefd2f567887a3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2017.10.951" target="_blank" >10.1016/j.proeng.2017.10.951</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of thermo-mechanical treatment of C-Mn-Si-Nb and C-Mn-Si-Al-Nb TRIP steels

Popis výsledku v původním jazyce

Two low alloyed steels with 0.2% C, 1.5% Mn, 0.06% Nb and various silicon and aluminium contents were used in this work. The first steel possessed only 1.8 % Si without aluminium, in the second one the silicon content was lowered to 0.5% and 1.3% aluminium was added. The same methods of thermo-mechanical processing were carried out on a thermo-mechanical simulator and consisted of soaking at the temperatures either in the one-phase austenite region or in the intercritical region, with one compressive deformation applied at the end of the soaking hold and the second one at 720°C. Two cooling rates, 14°C/s and 30°C/s were used to cool the samples to a bainitic hold carried out at 425°C for 600s. The final microstructures consisted of various volume fractions of ferrite, bainite, retained austenite and finally martensite, and they were analysed using scanning electron microscopy. Good combinations of high tensile strength above 800MPa accompanied by ductility above 40% were obtained for both steels. Higher amounts of austenite were retained in the aluminium alloyed steel than in the aluminium free steel for the same processing conditions and the final microstructures achieved slightly higher ductility at comparable ultimate tensile strengths

Název v anglickém jazyce

Comparison of thermo-mechanical treatment of C-Mn-Si-Nb and C-Mn-Si-Al-Nb TRIP steels

Popis výsledku anglicky

Two low alloyed steels with 0.2% C, 1.5% Mn, 0.06% Nb and various silicon and aluminium contents were used in this work. The first steel possessed only 1.8 % Si without aluminium, in the second one the silicon content was lowered to 0.5% and 1.3% aluminium was added. The same methods of thermo-mechanical processing were carried out on a thermo-mechanical simulator and consisted of soaking at the temperatures either in the one-phase austenite region or in the intercritical region, with one compressive deformation applied at the end of the soaking hold and the second one at 720°C. Two cooling rates, 14°C/s and 30°C/s were used to cool the samples to a bainitic hold carried out at 425°C for 600s. The final microstructures consisted of various volume fractions of ferrite, bainite, retained austenite and finally martensite, and they were analysed using scanning electron microscopy. Good combinations of high tensile strength above 800MPa accompanied by ductility above 40% were obtained for both steels. Higher amounts of austenite were retained in the aluminium alloyed steel than in the aluminium free steel for the same processing conditions and the final microstructures achieved slightly higher ductility at comparable ultimate tensile strengths

Druh

D - Stať ve sborníku

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

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Procedia Engineering

ISBN

—

ISSN

1877-7058

e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

1856-1861

Název nakladatele

Elsevier Ltd

Místo vydání

Cambridge

Místo konání akce

Cambridge, United Kingdom

Datum konání akce

17. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—