THE EFFECT OF HEAT TREATMENT PARAMETERS ON CREEP CHARACTERISTICS OF THE 10CRMO9-10 STEEL TUBE BENDS

1 JUNAK Grzegorz
Co-authors:
1 CIEŚLA Marek 1 FINDZIŃSKI Rafał
Institution:
1 Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Institute of Materials Science, Krasińskiego 8, 40-019 Katowice, grzegorz.junak@polsl.pl
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
813-818
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
420 views / 257 downloads
Abstract

The purpose of the paper was to analyse the effect of diverse heat treatment parameters (normalising and tempering) on mechanical characteristics of 508 x 20 x 90° tube bends made of the 10CrMo9-10 steel manufactured by bending with local induction heating. The research comprised tests of basic mechanical properties and creep at the temperature of 500 °C. With reference to the results thus obtained, it has been established that there is a relationship between mechanical properties of samples and individual features of their microstructure. Heat treatment parameters triggered changes to the microstructure of the bends, compared to an as-delivered tube. These effects included a change of strength characteristics (Rm, Rp0,2) and material creep lifetime, as compared with the tube. Heat treatment at a lower temperature and shorter tempering time assured the longest creep lifetime. It has also been found that the main structural factor determining creep lifetime of bends is grain size.

Keywords: 10CrMo9-10 steel, heat treatment, tube bending, mechanical properties, creep

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Scroll to Top