Electrical resistivity mapping of titanium and zirconium discs processed by high-pressure torsion for homogeneity and phase transformation evaluation
Source abstract
Abstract
High-pressure torsion (HPT) was applied to discs of pure Ti and Zr under pressures of 2 and 6 GPa, and the evolution of electrical resistivity was investigated. The electrical resistivity increased with increasing the distance from the disc centre in both Ti and Zr, but the distribution of electrical resistivity became more homogenous with increasing the number of HPT turns, i.e. with increasing the shear strain. The electrical resistivity increased more significantly when Ti and Zr were processed under 6 GPa because of the formation of high-pressure ω phase. The distribution of hardness with distance from disc centre and number of HPT turns were basically similar to those of electrical resistivity distribution. In situ electrical resistivity measurements during heating confirmed that the ω-Zr phase was thermally more stable than the ω-Ti phase.
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Research context
OpenAlex topics: Microstructure and mechanical properties · Metal and Thin Film Mechanics · Aluminum Alloys Composites Properties
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References (57)
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