Original scientific paper

Microstructure and mechanical properties of forged and rolled rings made from X20Cr13 steel

J. Lulkiewicz orcid.org/0000-0003-2703-6970 ; Poznań Institute of Technology, Center of Metal Forming, Research Group of Bulk Forming and Automation, Poznań, Poland
A. Kawałek ; Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Czestochowa, Poland
B. Pachutko ; Poznań Institute of Technology, Center of Metal Forming, Research Group of Bulk Forming and Automation, Poznań, Poland
T. Bajor ; Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Czestochowa, Poland
S. Szkudelski ; Poznań Institute of Technology, Center of Metal Forming, Research Group of Bulk Forming and Automation, Poznań, Poland

Abstract

The article describes the results of microstructure and mechanical properties tests (according to PN-EN ISO 6892- 1:2016-09 and PN-EN ISO 6507-1:2007), which were obtained on specimens taken from a fragment of a ring rolled in the temperature range from 1220 °C to 950 °C, with dimensions ø965/803 x 164 mm, annealed and heat-treated: quenching at the temperature of 1 030 ± 10 °C in oil and tempering at a temperature of 650 °C. The starting material for rolling was a forging with an opening of ø560/230 x 180 mm. Comparative hardness tests were also performed on specimens taken from the ring after rolling and softening annealing. The R_{m>/sub>, Rp0.2 and A indices of the ring fragment after heat treatment, as assumed, were respectively: 942 MPa, 763 MPa and 17 %.}

Keywords

X20Cr13 steel; forged and rolled rings; mechanical properties; microstructure

Hrčak ID:

300996

URI

https://hrcak.srce.hr/300996

Publication date:

3.7.2023.

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