Experimental and Theoretical Methods for Investigating Helium Effects in Rapidly Solidified Metals

摘要

Experimental and theoretical methods available for investigating helium-defect interactions in rapidly solidified materials are considered. Transmission electron microscopy and positron annihilation appear to be the most useful experimental techniques. The two techniques are generally complementary since the upper limit of resolution using positron annihilation is approximately of the scale where transmission microscopy becomes readily applied. The recently developed embedded atom method appears well suited to modeling helium-defect interactions. 35 refs., 3 figs. (ERA citation 13:018554)