Influence of heating parameters on flow stress curves of low-alloy Mn-Ti-B steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F18%3A10240912" target="_blank" >RIV/61989100:27360/18:10240912 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.24425/amm.2018.125105" target="_blank" >http://dx.doi.org/10.24425/amm.2018.125105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.24425/amm.2018.125105" target="_blank" >10.24425/amm.2018.125105</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of heating parameters on flow stress curves of low-alloy Mn-Ti-B steel

Popis výsledku v původním jazyce

Influence of the initial grain size on hot deformation behavior of the low-alloy Mn-Ti-B steel was investigated. The uniaxial compression tests were performed in range of the deformation temperatures of 900 - 1200 oC and strain rates of 0.1 - 10 s-1. One set of samples was heated directly to the deformation temperature, which corresponded to the initial austenitic grain size of 19-56 µm; the other set of samples was uniformly preheated at the temperature of 1200 oC. Whereas the values of activation energy, peak stress and steady-state stress values practically did not depend on the initial austenitic grain size, the peak strain values of coarser-grained structure significantly increase mainly at high values of the Zener-Hollomon parameter. This confirms the negative effect of the large size of the initial grain on the dynamic recrystallization kinetics, which can be explained by the reduction in nucleation density.

Název v anglickém jazyce

Influence of heating parameters on flow stress curves of low-alloy Mn-Ti-B steel

Popis výsledku anglicky

Influence of the initial grain size on hot deformation behavior of the low-alloy Mn-Ti-B steel was investigated. The uniaxial compression tests were performed in range of the deformation temperatures of 900 - 1200 oC and strain rates of 0.1 - 10 s-1. One set of samples was heated directly to the deformation temperature, which corresponded to the initial austenitic grain size of 19-56 µm; the other set of samples was uniformly preheated at the temperature of 1200 oC. Whereas the values of activation energy, peak stress and steady-state stress values practically did not depend on the initial austenitic grain size, the peak strain values of coarser-grained structure significantly increase mainly at high values of the Zener-Hollomon parameter. This confirms the negative effect of the large size of the initial grain on the dynamic recrystallization kinetics, which can be explained by the reduction in nucleation density.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1203" target="_blank" >LO1203: Regionální materiálově technologické výzkumné centrum - Program udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Archives of Metallurgy and Materials

ISSN

1733-3490

e-ISSN

—

Svazek periodika

63

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

8

Strana od-do

1785-1792

Kód UT WoS článku

000453260800027

EID výsledku v databázi Scopus

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