Abstract
The effects of impurities on creep cavitation characteristics in type 304 stainless steels with and without additions of sulphur and/or phosphorus have been studied using four experimental heats. Over a limited range of stress at 1000 K, the change in size distribution of creep cavities and carbide precipitates, and the level of impurity segregation with the amount of addition have been investigated. It is found that phosphorus accelerates the nucleation of creep cavities, but retards the growth of them. However, sulphur had little effect on both nucleation and growth of the cavities. It has also been found that ageing prior to testing inhibits creep cavitation. The effects of impurities on cavitation are analysed and discussed from the viewpoint of the change in the segregation of impurities and the precipitation of carbides due to impurity additions.
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Hong, J.H., Nam, S.W. & Choi, S.P. The influences of sulphur and phosphorus additions on the creep cavitation characteristics in type 304 stainless steels. J Mater Sci 21, 3966–3976 (1986). https://doi.org/10.1007/BF02431637
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DOI: https://doi.org/10.1007/BF02431637