Publication result detail

Precipitation of intermetallics in the cast duplex stainless steel

MYŠKA, M.; BOŘIL, P.; KRUTIŠ, V.; ZÁDĚRA, A.

Original Title

Precipitation of intermetallics in the cast duplex stainless steel

English Title

Precipitation of intermetallics in the cast duplex stainless steel

Type

Paper in proceedings outside WoS and Scopus

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

austenitic-ferritic duplex steel, intermetallics, sigma, chi

Key words in English

austenitic-ferritic duplex steel, intermetallics, sigma, chi

Authors

MYŠKA, M.; BOŘIL, P.; KRUTIŠ, V.; ZÁDĚRA, A.

RIV year

2023

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"

Pages from

179

Pages to

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",
  number="nr 23",
  pages="179--189",
  publisher="Archives of Foundry Engineering",
  address="Katowice-Gliwice 2021",
  isbn="978-83-63605-52-0"
}