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Solid metal induced embrittlement (SMIE) is very similar to liquid metal induced embrittlement (LMIE or LME).

SMIE occurs at lower temperatures than LMIE, with elements such as zinc, cadmium and Mercury being atomically adsorbed into the surface of ferritic/austenitic based steels (and also aluminium in the case of mercury).

The diffusion of these elements towards grain boundaries occurs and a rate which is at least an order of magnitude less than LMIE and leads to a loss of ductility, particularly when used for cyclic temperature service (poor ductility at lower temperatures).

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