A Comparison of X-Ray Line Breadth and Internal Friction for Alpha-Brass as Affected by Cold-Working and Annealing

X-ray line breadth measurements are obtained for samples of alpha-brass cold-stretched in differing amounts and then annealed at various temperatures. A comparison of these data with internal friction measurements made on the same samples reveals marked dissimilarities. For small amounts of cold-work, line breadths appear to be affected by the rate of cold-working, whereas internal friction seems more dependent upon the amount of cold-work. The internal friction introduced by cold-work is removed by low temperature annealing (far below the temperature of recrystallization). Line breadth changes little with annealing until just before recrystallization when it exhibits a comparatively sharp decrease.