Abstract
1. With heating of annealed high-speed steel containing different amounts of tungsten the austenite grain size depends on the development of recrystallization caused by diffusional spontaneous work hardening of austenite resulting from the solution of carbides. 2. Raising the tungsten concentration of high-speed steels leads to an increase in the quantity and a change in the composition of the carbide phase and consequently to an increase of the static distortion of the austenite lattice during heating, an increase of the initial recrystallization temperature, and broadening of the recrystallization range.
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