Advances in plasma technique for Hadfield-coated layers to enhance mechanical durability of R260 rail steel
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F25%3A39923016" target="_blank" >RIV/00216275:25510/25:39923016 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.rsurfi.2025.100477" target="_blank" >https://doi.org/10.1016/j.rsurfi.2025.100477</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.rsurfi.2025.100477" target="_blank" >10.1016/j.rsurfi.2025.100477</a>
Alternative languages
Result language
angličtina
Original language name
Advances in plasma technique for Hadfield-coated layers to enhance mechanical durability of R260 rail steel
Original language description
Hadfield steel plays a critical role in high-stress railway track components. This study investigates the potential of plasma powder additive technology for rebuilding railway heavy-haul parts. A comparative analysis of different filler metals, including flux-cored wire and electrode filler metals, focuses on microstructure, mechanical properties, and heat transfer during layer formation. Plasma welding ensures structural stability, essential for dynamic strengthening and fracture toughness. Microstructural evolution is examined via optical and electron microscopy, supported by spherical indentation and Vickers hardness testing. Energy Dispersive Spectroscopy analysis identifies chemical heterogeneity and grain boundaries carbides sources. Numerical simulations provide insights into heat accumulation, optimizing technological parameters to mitigate carbide precipitation and enhance microstructural quality. Results indicate that plasma-welded samples achieve, on average, a 42 % higher indentation yield strength compared to manually welded samples. The strain-hardening exponent is also higher in plasma welding 0.4-0.6 compared to manual welding (0.2). These findings significantly advance railway welding techniques with capability to improve rail surface durability under demanding conditions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Results in Surfaces and Interfaces
ISSN
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e-ISSN
2666-8459
Volume of the periodical
19
Issue of the periodical within the volume
May 2025
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
100477
UT code for WoS article
001467294800001
EID of the result in the Scopus database
2-s2.0-105000280946