Non-metallic inclusions are known to have deleterious affects on fatigue resistance of steels and other metals and alloys. Non-metallic inclusions reduce fatigue life by changing the micro-stresses in the vicinity of a propagating crack. But, some non-metallic types have a greater affect on fatigue life than other, more benign non-metallic types. Residual micro-stresses surrounding a non-metallic inclusion is proposed as one solution as to why these differences exist. Specifically investigated were the non-metallic types of Alumina, Silica and Manganese Sulfide — all of which are found to some extent in AAR M-107/M-208 Class C wheel steel.
- Rail Transportation Division
The Development of Residual Micro-Stresses Surrounding Various Inclusion Types in Wheel Steel
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Dedmon, S, & Pilch, JM. "The Development of Residual Micro-Stresses Surrounding Various Inclusion Types in Wheel Steel." Proceedings of the ASME 2009 Rail Transportation Division Fall Technical Conference. ASME 2009 Rail Transportation Division Fall Technical Conference. Fort Worth, Texas, USA. October 20–21, 2009. pp. 25-32. ASME. https://doi.org/10.1115/RTDF2009-18009
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