Community Research and Development Information Service - CORDIS


In the last ten years the development of steels for railway wheels and tyres was directed mainly towards lower carbon contents to improve the thermal fatigue behaviour. The loss of strength was balanced by adding other alloying elements, such as chromium, which shift the microstructure predominantly to tempered martensite or bainite with a high ratio of yield to tensile strength as a consequence. Results obtained under in-service conditions were unsatisfactory. The aim of this research project was to provide new materials with increased yield strength and improved toughness behaviour, but with a ratio of yield to tensile strength preferably not exceeding 65%. The increase of the yield strength should be achieved by both precipitation hardening (special alloyed carbides) and solid-solution hardening (preferably silicon).

Additional information

Authors: VEREINIGTE SCHMIEDEWERKE GMBH, Vereinigte Schmiedewerke GmbH, Hattingen (DE)
Bibliographic Reference: EUR 12986 DE (1990) 149 pp., FS, ECU 12.50
Availability: (2)
ISBN: ISBN 92-826-1902-8
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