Statistical Analysis of Influential Factors on the Stability of Retained Austenite in Low Alloy TRIP Steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F22%3A10251563" target="_blank" >RIV/61989100:27690/22:10251563 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.jstage.jst.go.jp/article/matertrans/63/5/63_MT-M2021239/_article/-char/en" target="_blank" >https://www.jstage.jst.go.jp/article/matertrans/63/5/63_MT-M2021239/_article/-char/en</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2320/matertrans.MT-M2021239" target="_blank" >10.2320/matertrans.MT-M2021239</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Statistical Analysis of Influential Factors on the Stability of Retained Austenite in Low Alloy TRIP Steel

Popis výsledku v původním jazyce

The factors representing the stability of retained austenite (gamma(R)) in low-alloy TRIP steel at a plastic strain of up to 0.04 were statistically analyzed by evaluating the size, strain level, crystal orientation, morphology, and precipitation site of a large number of gamma(R) grains (&gt;1000). The ratio (R-area) of the area of gamma R after deformation to that before deformation was adopted as a representative parameter for the stability of gamma(R). The frequency of low R-area in fine gamma(R) was significantly high, indicating that they were unstable. Moreover, it was indicated that gamma(R) in the high-strain regions tended to be unstable, whereas gamma(R) in the bainite region was stable. The crystal orientation and aspect ratio did not correlate with R-area in TRIP steel. The strain level and precipitation sites in coarse gamma(R) were uncorrelated with R-area, indicating that the size of the y R has a greater effect on its stability. The stability of gamma(R) was not dominated by the carbon concentration but was affected by other factors. The size of gamma(R) may represent the stress conditions at the gamma(R) /ferrite or bainite boundaries, which is why this factor represents the stability of gamma(R) in the TRIP steel at a plastic strain of up to 0.04.

Název v anglickém jazyce

Statistical Analysis of Influential Factors on the Stability of Retained Austenite in Low Alloy TRIP Steel

Popis výsledku anglicky

The factors representing the stability of retained austenite (gamma(R)) in low-alloy TRIP steel at a plastic strain of up to 0.04 were statistically analyzed by evaluating the size, strain level, crystal orientation, morphology, and precipitation site of a large number of gamma(R) grains (&gt;1000). The ratio (R-area) of the area of gamma R after deformation to that before deformation was adopted as a representative parameter for the stability of gamma(R). The frequency of low R-area in fine gamma(R) was significantly high, indicating that they were unstable. Moreover, it was indicated that gamma(R) in the high-strain regions tended to be unstable, whereas gamma(R) in the bainite region was stable. The crystal orientation and aspect ratio did not correlate with R-area in TRIP steel. The strain level and precipitation sites in coarse gamma(R) were uncorrelated with R-area, indicating that the size of the y R has a greater effect on its stability. The stability of gamma(R) was not dominated by the carbon concentration but was affected by other factors. The size of gamma(R) may represent the stress conditions at the gamma(R) /ferrite or bainite boundaries, which is why this factor represents the stability of gamma(R) in the TRIP steel at a plastic strain of up to 0.04.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Materials Transactions

ISSN

1345-9678

e-ISSN

1347-5320

Svazek periodika

63

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

JP - Japonsko

Počet stran výsledku

10

Strana od-do

693-702

Kód UT WoS článku

000791970500004

EID výsledku v databázi Scopus

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