Abstract
1. The use of local heat treatment ensuring recrystallization of the transverse weld seam is sufficient to obtain high fatigue strength of axles in three-axle trucks with beams made of steel 17GS manufactured by hot stamping. 2. The creation of residual compressive stresses in the zone of the highest tensile stresses occurring in operation by means of local induction heating substantially increases the fatigue strength of highly stressed axles in two-axle trucks (when the beam are made from steel 17GS). 3. Replacement of bulk heat treatment of axles with local heat treatment and the use of steel 17GS results in considerable savings due to lower costs for electricity, oil, refractories, shotpeening, capital investments, and labor costs.
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