Effects of Nb, Ti and V on recrystallization kinetics of austenite in HSLA steels

• Autorzy: Opiela M.

Identyfikatory

DOI

10.15199/28.2016.6.2

Warianty tytułu

PL

Oddziaływanie Nb, Ti i V na kinetykę rekrystalizacji austenitu w stalach typu HSLA

• Języki publikacji: EN

Abstrakty

EN

The work presents research results of impact of Nb, Ti and V microadditions on recrystallization kinetics and microstructure of newly elaborated steels assigned for production of forged machine parts, using the method of thermomechanical treatment. The study was performed with the use of Gleeble 3800 simulator. In order to determine recrystallization kinetics of plastically deformed austenite, discontinuous compression tests of specimens were done with a given strain at the rate of 10 s–1, in a temperature range from 900 to 1100°C, with isothermal holding of samples between successive stages of deformation for 2 to 100 s. Recrystallization kinetics of plastically deformed austenite was described using the Johnson-Mehl-Avrami equation. Performed two-stages compression tests revealed that microadditions introduced into steel considerably influence the kinetics of static recrystallization. Determined time of total recrystallization of austenite, tR, in a temperature range from 1100°C to 900°C changes from 100 to 600 s and from 300 to 800 s — for the Ti–V steel and Ti–Nb–V steel, respectively. Executed hot compression tests will contribute to establishing conditions of forging with the method of thermomechanical treatment.

PL

W pracy przedstawiono wyniki badań oddziaływania mikrododatków Nb, Ti i V na kinetykę rekrystalizacji i strukturę nowo opracowanych stali typu HSLA przeznaczonych do wytwarzania kutych elementów maszyn metodą obróbki cieplno-plastycznej.

Słowa kluczowe

EN

HSLA steels; thermomechanical treatment; static recrystallization

PL

stale typu HSLA; obróbka cieplno-plastyczna; rekrystalizacja statyczna

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2016
• Tom: Vol. 37, nr 6
• Strony: 289--294
• Opis fizyczny: Bibliogr. 23 poz., fig., tab.

Twórcy

autor

Opiela M.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Gliwice, Poland

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.