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Characteristic of Crystallite Sizes and Lattice Deformations Changes in the Oxide Layer Formed on Steel Operated for a Long Time at an Elevated Temperature

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Abstract:

The paper presents results of studies on the phase composition, crystallite sizes and lattice deformations of oxide layers formed during a long-term operation on X10CrMoVNb9-1 steel. Test specimens were taken from a live steam pipeline operated at 535°C for 70,000 hours. X-ray studies were carried out on the tube outside surface (on the flue gas side), then the layer’s surface was polished and the diffraction measurements repeated to reveal differences in the originated oxides layer. X-ray phase analysis was performed using a SEIFFERT 3003 T/T X-ray diffractometer, with a cobalt tube of λCo = 0.17902nm wavelength. crystallographic database were used for the phase identification.

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Info:

Periodical:

Solid State Phenomena (Volumes 203-204)

Pages:

204-207

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.203-204.204

Citation:

Cite this paper

Online since:

June 2013

Authors:

Monika Gwoździk

Keywords:

Crystallite Sizes, Oxide Layer, X10CrMoVNb9-1 Steel

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