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The positron lifetime spectra of several Al_(93.3-x)Fe_(4.3)V_(0.7)Si_(1.7)Mm_x (x=0.5%, 1.0%, 3.0%, atom fraction) alloyswith different content of misch metal prepared by rapid solidification were measured, and the variations on the interfacialdefects with the content of misch metal were revealed by an analysis of the lifetime results. The interface characteristics de-rived from the lifetime results could be used to give a satisfactory interpretation of the dependence of mechanical propertieson the content of misch metal.
The positron lifetime spectra of several Al_ (93.3-x) Fe_ (4.3) V_ (0.7) Si_ (1.7) Mm_x (x = 0.5%, 1.0%, 3.0%, atom fraction) alloyswith different content of misch metal prepared by rapid solidification were measured, and the variations on the interfacialdefects with the content of misch metal were revealed by an analysis of the lifetime results. The interface characteristics de-rived from the lifetime results could be used to give a satisfactory interpretation of the dependence of mechanical propertieson the content of misch metal.