Evidence for an early softening behavior in pure copper processed by high-pressure torsion
Source abstract
Abstract
Pure copper of 99.99 % purity was processed by high-pressure torsion under a pressure of 6.0 GPa at room temperature through various numbers of turns from 1/4 to 10. Microhardness measurements show that the hardness initially increases to a maximum value at a strain of ~5.6, decreases to a strain of ~8.4, and then increases slowly to a saturation condition at strains at and above ~80. These data are interpreted in terms of the advent of dynamic recrystallization. The results have similarities and differences to the softening with recovery that is well established in high-purity aluminum.
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Research context
OpenAlex topics: Microstructure and mechanical properties · High-Velocity Impact and Material Behavior · Metal and Thin Film Mechanics
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References (47)
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