Flow stress and positron traps during the hardening stage in cyclically deformed copper

L. Díaz Departamento de Física del Estado Sólido, Facultad de Ciencias Físicas, Universidad Complutense, 28040, Madrid, Spain

R. Pareja Departamento de Física del Estado Sólido, Facultad de Ciencias Físicas, Universidad Complutense, 28040, Madrid, Spain

M. A. Pedrosa Departamento de Física del Estado Sólido, Facultad de Ciencias Físicas, Universidad Complutense, 28040, Madrid, Spain

J. I. Prieto Departamento de Física del Estado Sólido, Facultad de Ciencias Físicas, Universidad Complutense, 28040, Madrid, Spain

R. González Departamento de Física del Estado Sólido, Facultad de Ciencias Físicas, Universidad Complutense, 28040, Madrid, Spain

Abstract

A relationship between the peak flow stress and the positron trapping rate has been found during the hardening stage in polycrystalline copper cyclically deformed at 500 K. This relationship coincides with that predicting the vacancy fraction created by jog dragging. It is concluded that clusters of these vacancies should be the main positron traps.

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Flow stress and positron traps during the hardening stage in cyclically deformed copper

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Flow stress and positron traps during the hardening stage in cyclically deformed copper

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