Influence of Ultrasonic Vibration on the Reinforced Layer of Titanium Alloys Strengthened by Quasi-dry EDM with Mixed Powders

Fu Lin

doi:10.62051/ijmee.v8n1.08

Authors

Fu Lin

DOI:

https://doi.org/10.62051/ijmee.v8n1.08

Keywords:

Powder Mixing Quasi-dry, EDM, Ultrasonic Power, Reinforcement Layer

Abstract

To address issues such as powder agglomeration and unstable discharges during mixed powder near-dry electrical discharge surface strengthening, a novel method termed Ultrasonic Assisted Powder Mixed Near Dry Electrical Discharge Surface Strengthening (UPMND-EDSS) is proposed. Ultrasonic vibration is employed to disrupt powder agglomerates, preparing a dispersed, homogeneous three-phase medium that enhances the surface quality and properties of the strengthened layer in TC4 titanium alloy. A systematic analysis of the effects of varying ultrasonic vibration on the surface and properties of the strengthened layer reveals: the hardness of the strengthened layer markedly increased under different ultrasonic powers, with an average hardness reaching 1289.06 HV, approximately 3–4 times that of the substrate; when ultrasonic power was increased to 1200 W, the surface quality of the strengthened layer was optimal, with an average microhardness of 1370.4 HV. In summary, the introduction of ultrasonic vibration effectively improves the surface quality of the TC4 titanium alloy strengthened layer.

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