The structure of quenching sorbite has greater resistance to fatigue crack propagation in the cast steels type 20GL and 20GFL than the ferrite-pearlite mixture after normalization.
The existence of macropores and micropores in cast metal does not affect the speed of fatigue crack propagation.
Spalling with a large number of secondary microcracks is a more energy consuming process than failure involving the formation of fatigue grooves.
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Kornev, N.I., Kosarev, L.N. & Strok, L.P. Features of the micromechanism of failure of cast steels in the process of fatigue crack propagation. Met Sci Heat Treat 28, 189–194 (1986). https://doi.org/10.1007/BF00705389
- Fatigue Crack
- Fatigue Crack Propagation
- Great Resistance