Abstract
The effect of varying triaxial stress field, by elongating the spheroidal graphite, on intermediate temperature embrittlement of ferritic spheroidal graphite cast irons has been investigated. The spheroidal graphite cast irons which have a maximum ductility at 40 pct reduction can eliminate the intermediate temperature embrittlement and its dependence on triaxiality. The flow stress of ferritic spheroidal graphite cast irons can be expressed by the following equation as the function of shape ratio (β) and the ratio of half mean free path to equatorial radius (α) at 673 K:
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Chao, C.G., Lui, T.S. & Hon, M.H. The effect of triaxial stress field on intermediate temperature embrittlement of ferritic spheroidal graphite cast irons. Metall Trans A 19, 1213–1219 (1988). https://doi.org/10.1007/BF02662582
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DOI: https://doi.org/10.1007/BF02662582