Effect of annealing on point defect population in cold-drawn pearlitic steel wires

Abstract

Cold-drawn pearlitic steel wires were subjected to differential scanning calorimetry and resistivity measurements during heating. Both techniques yield two peaks, one at 500-600 K, the other at 400-450 K.

Whereas the peak at 500-600 K can be ascribed to voids consisting of about 10 vacancies as confirmed by positron annihilation spectroscopy, the low-temperature peak is ascribed to V1C2 and/or V2C4 complexes. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd.

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Keywords

• Pearlitic steel
• Point defect recovery
• Vacancy cluster
• Positron annihilation spectroscopy