Tribology and Materials | Volume 3 | Issue 2 | 2024 | 59-66
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https://doi.org/10.46793/tribomat.2024.008
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Erosion behaviour of Fe-Cr-C alloys: Cast alloy versus coating
Bratislav Rajicic
1,
Aleksandar Maslarevic1,
Gordana Bakic1,
Vesna Maksimovic2,
Milos B. Djukic1
1 University of Belgrade, Faculty of Mechanical Engineering, Belgrade, Serbia
2 University of Belgrade, "Vinča" Institute of Nuclear Sciences – National Institute of the Republic of Serbia, Belgrade, Serbia
Abstract: This research focuses on the erosion wear behaviour of
two Fe-Cr-C alloys with similar chemical compositions obtained using
different production methods. The first alloy belongs to the high
chromium cast irons (HCCI). It was made by casting, after which the
samples were heat treated by annealing. The second alloy in the form of
the coating was applied by the plasma transferred arc (PTA) surface
welding process at the substrate material (structural carbon steel).
Damage to the components of industrial plants due to erosive and/or
abrasive wear is a frequent cause of failure and outages of such
systems. For this reason, and to bring the experimental research closer
to real service conditions, an erosion test was performed at a gas blast
sand facility with a high erodent speed of 90 m/s and a higher feed rate
than standard erosion testing parameters recommended in ASTM G76
standard. Microstructural characterisation of all samples was done using
a scanning electron microscope (SEM). The X-ray diffraction analysis
(XRD) was used to identify the phases present. Similar erosion
mechanisms were observed on all tested specimens, but coated samples
(PTA alloy) had a lower mass loss during the erosion test compared to
cast samples (HCCI alloy), i.e. they showed better erosion resistance.
Keywords: erosion, wear, Fe-Cr-C alloys, high chromium cast irons, plasma transferred arc.
Received: 28-04-2024, Revised: 05-06-2024, Accepted: 15-06-2024
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt,
and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.
2 University of Belgrade, "Vinča" Institute of Nuclear Sciences – National Institute of the Republic of Serbia, Belgrade, Serbia
Abstract: This research focuses on the erosion wear behaviour of two Fe-Cr-C alloys with similar chemical compositions obtained using different production methods. The first alloy belongs to the high chromium cast irons (HCCI). It was made by casting, after which the samples were heat treated by annealing. The second alloy in the form of the coating was applied by the plasma transferred arc (PTA) surface welding process at the substrate material (structural carbon steel). Damage to the components of industrial plants due to erosive and/or abrasive wear is a frequent cause of failure and outages of such systems. For this reason, and to bring the experimental research closer to real service conditions, an erosion test was performed at a gas blast sand facility with a high erodent speed of 90 m/s and a higher feed rate than standard erosion testing parameters recommended in ASTM G76 standard. Microstructural characterisation of all samples was done using a scanning electron microscope (SEM). The X-ray diffraction analysis (XRD) was used to identify the phases present. Similar erosion mechanisms were observed on all tested specimens, but coated samples (PTA alloy) had a lower mass loss during the erosion test compared to cast samples (HCCI alloy), i.e. they showed better erosion resistance.
Keywords: erosion, wear, Fe-Cr-C alloys, high chromium cast irons, plasma transferred arc.
Received: 28-04-2024, Revised: 05-06-2024, Accepted: 15-06-2024
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt, and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.