DISLOCATION RELAXATION PEAKS IN HIGH PURITY TUNGSTEN SINGLE CRYSTALS

1 December 1983

journal article
Published by EDP Sciences in Le Journal de Physique Colloques

Vol. 44 (C9) , C9-691
https://doi.org/10.1051/jphyscol:19839104

Abstract

Experimental observations on the dislocation internal friction spectrum of high purity tungsten single crystals are reported for the temperature range 15K-800K by low frequency torsion pendulum technique. The observed relaxation effects are classified as (α',α), β and γ relaxations, by comparison with the similar dislocation damping spectrum of Mo. Relaxation effects occur at ∼1 Hz in the following temperature ranges : (α',α), 46K-170K ; β, 250K-450K ; γ, 680 K. The γ peak disappears quickly after heating to 800 K. The results are compared with earlier observations of other authors

Keywords

SINGLE CRYSTALS
TEMPERATURE RANGE
HIGH PURITY
RELAXATION EFFECTS
TUNGSTEN SINGLE
PURITY TUNGSTEN

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