EVALUATION OF STRUCTURAL CHANGES OF MICROSTRUCTURE AND PROPERTIES OF RAIL FASTENING SYSTEM SKL-12 AFTER LONG-TERM USAGE

Author's Name: Krzysztof Labisz, Jaroslaw Konieczny, Lukasz Wierzbicki, Janusz Cwiek & Izabella Zaborowska
Subject Area: Science and Engineering
Subject Engineering
Section Research Paper

Keyword:

Rail fastening system, sleepers, microstructure, ferrite, microstructure, mechanical properties, SKL12 rail steel.


Abstract

Rail transport in Poland is one of the most dense one in Europe and exists form the end of the 18th century, however some issues concerning especially materials and its exploitation are still actual. There have been performed analyses in this paper concerning characterization of applied track infrastructure elementsin form of sleepers fastening system SKL 12 especially characteristics of the material after long-term usage. In this paper have been conducted investigations on the non-used and used fastenersby mind of classic material research methodology. The analysis was carried out based on the results obtained through research using light as well as SEM microscopy, EDS chemical microanalysis and Rockwell hardness testing.

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