Strain-Induced Diffusion and Precipitation in Aluminum-Lithium Alloys during Creep.

摘要

This paper describes the observation of lithium diffusion to preferred grain boundaries within the metal specimen; the paper was revised at the suggestion of the reviewer, to show clearly that the grain boundary effect was a second phase and not intergranular fracture. Strain-induced diffusion may be the explanation for the grain boundary layers of LiAl compound observed in Mark VI slugs after postirradiation annealing, and the similar layers that formed in control rods during irradiation. 1 ref., 4 figs.