Publication detail
Precipitation of intermetallics in the cast duplex stainless steel
MYŠKA, M. BOŘIL, P. KRUTIŠ, V. ZÁDĚRA, A.
English title
Precipitation of intermetallics in the cast duplex stainless steel
Type
article in a collection out of WoS and Scopus
Language
en
Original abstract
In this work, cast standard duplex steel ASTM A890 Gr4A is investigated and subjected to different isothermal annealing temperatures in the range from 600 °C to 900 °C and in the range from 1 hour to 250 hours. The change in microstructure at these isothermal annealing temperatures is mainly reflected in ferrite, which is transformed into phases such as sigma phase (σ), chi phase (χ), chromium carbides (M23C6), chromium nitrides (Cr2N), secondary austenite (γ2) and Widmanstätten austenite (γw). All phases affect not only the corrosion resistance but also the mechanical properties such as ductility and plasticity, so they cause cracks when the cast is cooling down in the mould, which we try to avoid.
English abstract
In this work, cast standard duplex steel ASTM A890 Gr4A is investigated and subjected to different isothermal annealing temperatures in the range from 600 °C to 900 °C and in the range from 1 hour to 250 hours. The change in microstructure at these isothermal annealing temperatures is mainly reflected in ferrite, which is transformed into phases such as sigma phase (σ), chi phase (χ), chromium carbides (M23C6), chromium nitrides (Cr2N), secondary austenite (γ2) and Widmanstätten austenite (γw). All phases affect not only the corrosion resistance but also the mechanical properties such as ductility and plasticity, so they cause cracks when the cast is cooling down in the mould, which we try to avoid.
Keywords in English
austenitic-ferritic duplex steel, intermetallics, sigma, chi
Released
24.11.2021
Publisher
Archives of Foundry Engineering
Location
Katowice-Gliwice 2021
ISBN
978-83-63605-52-0
Book
Zeszyty Studenckich Prac Naukowych "SFEROID"
Edition number
nr 23
Pages from–to
179–189
Pages count
11
BIBTEX
@inproceedings{BUT182397,
author="Martin {Myška} and Petr {Bořil} and Vladimír {Krutiš} and Antonín {Záděra},
title="Precipitation of intermetallics in the cast duplex stainless steel",
booktitle="Zeszyty Studenckich Prac Naukowych "SFEROID"",
year="2021",
month="November",
pages="179--189",
publisher="Archives of Foundry Engineering",
address="Katowice-Gliwice 2021",
isbn="978-83-63605-52-0"
}