Abstract

MeV electron irradiation can stimulate solid-state amorphization in some intermetallic compounds. The irradiation induced amorphization phenomenon facilitates a clearer observation of the composite microstructure of the compounds. MeV electron irradiation is applied to a composite structure containing intermetallic compound “A,” which undergoes solid-state amorphization and crystalline phase “B,” which does not undergo amorphization. The composite structure transforms into a mixture of amorphous and crystalline phases by the irradiation. The distribution of A and B in the structure can hence be easily determined. High-voltage electron microscopy (HVEM) offers a unique microstructure observation technique that uses the difference between the sensitivities of compounds to undergo solid-state amorphization when MeV electron irradiation is applied to them.

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