A layer-by-layer analysis of rails bulk-hardened in oil and differentially hardened in a variety of regimes is performed by means of transmission electron microscopy. Quantitative parameters of dislocation substructures and internal stress fields, and their dependences on the distance from the tread contact surface are established. It is shown that the most dangerous stress concentrators are interfaces between globular cementite matrix particles; such interfaces form predominantly in rails subjected to bulk quenching.
|Number of pages||7|
|Journal||Bulletin of the Russian Academy of Sciences: Physics|
|Publication status||Published - 21 Oct 2014|
ASJC Scopus subject areas
- Physics and Astronomy(all)