Relief of strain hardening in deformed Inconel 718 by high-density pulsed electric current
Source abstract
Abstract
The effect of high-density pulsed electric current (HDPEC) on the microstructure evolution and corresponding changes in the mechanical properties of the deformed Ni-based alloy Inconel 718 was investigated. After HDPEC treatment, the strain hardening was fully relieved and the ductility recovered correspondingly. The results show that the dislocation density plays a dominant role, and the grain size has a side effect on the strain-hardening relief. Furthermore, the correlation between the mechanical properties and microstructure evolution affected by HDPEC was clarified. HDPEC treatment provides a way to alter the microstructure and thus tailor the mechanical properties of the deformed components. Hence, it is applicable to the metal-forming field to achieve rapid relief of strain hardening and enhance formability.
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Research context
OpenAlex topics: Electromagnetic Effects on Materials · Microstructure and mechanical properties · Hydrogen embrittlement and corrosion behaviors in metals
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