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ANALYSIS OF CRYSTALLITE SIZE CHANGES IN AN OXIDE LAYER FORMED ON 13CRMO4-5 STEEL USED IN THE POWER INDUSTRY

1 GWOŹDZIK Monika
Institution:
1 Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Institute of Materials Engineering, Czestochowa, Poland, EU, e-mail: gwozdzik.monika@wip.pcz.pl
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
694-699
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
564 views / 236 downloads
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Abstract

The paper presents results of studies on the crystallite sizes of oxide layer formed during a long-term operation on 13CrMo4-5 steel at an elevated temperature (T=470oC, t=190,000h). This value was determined by a method based on analysis of the diffraction line profile, according to a Scherrer formula. The oxide layer was studied on a surface and a cross-section at the outer and inner site on the pipe. X-ray studies were carried out on the surface of a tube, then the layer’s surface was polished and the diffraction measurements repeated to reveal differences in the originated oxides layer.

Keywords: 13CrMo4-5 steel, XRD diffraction, crystallite sizes

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