Research Progress on Constitutive Modeling and Simulation of Electrically-Assisted Forming of Titanium Alloys
Electrically-assisted technology has the advantages of reducing the material deformation resistance and improving the forming accuracy of parts,and has been widely used in the high-quality precision forming of lightweight and difficult-to-deform titanium alloys.The combined effect of Joule thermal effect and athermal effect induced by electric current has multiple influ-ences on the mechanical properties and microstructures of titanium alloys.Therefore,it is still controversial whether the tradi-tional constitutive models can accurately describe the mechanical behaviors of materials in electrically-assisted forming process.In this paper,firstly,we summarize the studies on the electroplastic effect mechanism,and clarify the influence of electric cur-rent on macroscopic mechanical behaviors and microstructure evolutions of titanium alloys.Secondly,the advancements and lim-itations of current material constitutive models in the electrically-assisted forming process are sorted out,and how to investigate the electrically-assisted forming process of titanium alloys with the aid of computer simulation methods at different scales is re-viewed.Finally,the future research trends of constitutive model and simulation technology of electrically-assisted forming of ti-tanium alloy are envisioned.
titanium alloyselectroplasticityconstitutive modelfinite element methodmolecular dynamics
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