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High-Temperature Corrosion Fatigue of a Ferritic Ductile Cast Iron in Inert and Corrosive Environments at 700ºC
Registro en:
10 Th International Symposium on the Science and Processing of Cast Iron. 2014. Argentina: Mar del Plata 10 to 13th of November.
978-987-45833-0-7
Autor
Ekström, M.
Jonsson, S.
Institución
Resumen
In the present work, low-cycle fatigue testing of a ferritic ductile cast iron named SiMo51 has been carried out in three atmospheres: argon, air and a synthetic diesel exhaust-gas at 700C. The fatigue life was reduced up to 80% in the worst case. Two crack growth mechanisms were observed and directly linked to oxidation. At weak oxidation, a nodule-to-nodule crack growth occurred. At strong oxidation, crack growth occurred through oxidized material in front of the crack tip.