Fast-Welding Chromium-Molybdenum-Vanadium Extrahigh Strength Rail Steels
Abstract:
A series of experimental rail steels was prepared to identify a composition that exhibits a tensile strength greater than 1250MPa (180ksi) and a Brinell hardness of 350 to 400. At the same time, the steel was to be properly alloyed so that no extraordinary procedures are required for flash-but welding. The preferred composition that best met these requirements was 0.70 to 0.80% C, 0.50 to 0.70% Mn, 0.50 to 0.70% Cr, 0.22 to 0.27% Mo, and 0.08 to 0.125% V. In this steel, vanadium appears to interact with molybdenum to promote a fine lamellar-pearlite microstructure.
Keywords:
vanadium, rail steel.
Author:
F. B. Fletcher, Y. E. Smith and V. A. Biss
Affiiation
Climax Molybdenum Company, U.S.A.
PDF:
Source:
Vanadium in Rail Steels – Proceedings of Vanitec Seminar in Chicago, 8th Nov. 1979, pp.41-47
PDF Preview:
