Effect of Compound Energy Field with Laser and Ultrasonic Assisted Molding on Bending Performance of TC4 Titanium Alloy

Abstract

Aiming at solve the difficulty and low dimensional accuracy in bending titanium alloy specimens at room temperature, we proposed a compound energy field (CEF) with laser and ultrasonic forming method. Through the conventional bending, laser-assisted energy field bending and CEF-assisted bending experiments on TC4 titanium alloy, the effects of bending force, laser-assisted energy field and CEF on the springback angle and fillet radius of TC4 titanium alloy specimens in V-shape bending were analyzed. The impact of the CEF-assisted bending process on the microstructure of TC4 titanium alloy was also investigated. The results show that CEF-assisted bending process has the advantages of high energy density, simple operation process and small influence area of the microstructure performances. It is effective in reducing the springback and fillet radius of bending specimens. Thus, CEF-assisted bending effectively improves the formability and surface quality of titanium alloy specimens.

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