The recovery? recrystallization and grain growth of cold rolled samples of Cu, x-brass, and Ni are followed with positron Doppler broadening and, in the case of Ni, positron lifetime measurements. The positron measurements sbow similar behavior during the annealing of cold worked metals as do hardness measurements, however, the positron measurements are quite sensitive to changes in the recovery region in which hardness is completely insensitive. Positron measurements are also much more sensitive than hardness measurements to detect the beginning of grain growth. Die Erholung, die Rekristallisation und das Kornwachstum von kaltgerollten Proben von Kupfer, cr-Messing und Kickel werden mit Positron-Doppler-Verbreitung und in1 Falle des Nickels auch mit Positronlebensdauermessungen verfolgt. Die Positronmessungen zeigen ahnliches Verhalten wahrend der JVarmebehandlung des kaltgeformten Netalles wie die Hartemessungen, jedoch sind die Positronmesssungen verhaltnismaBig empfindlich gegen Anderungen in der Erholungszone in welcher die Harte vollstandig unempfindlich ist. Positronmessungen sind daher f u r die Bestimmung des Beginns des Kornwachstums sehr vie1 empfindlicher als Hartemessungen.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.