Abstract
MeV electron irradiation-induced structural changes in a C11b–Ti2Pd intermetallic compound were investigated by high-voltage electron microscopy to provide evidence for amorphous-phase formation in Ti-based (Ti>50at.%) intermetallic compounds. The Ti2Pd compound could not maintain its original structure against the MeV electrons, and a bct solid–solution phase was formed at 22, 103, and 298K. At temperatures ⩽103K, halo rings appeared in the selected area diffraction patterns after the bct-phase formation under the irradiation. This fact suggests the occurrence of solid-state amorphization; however, an amorphous single phase could not be obtained in the Ti66.7Pd33.3 alloy.
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