Study on Residual Stress for High-Speed Cutting Titanium Alloy Based on Finite Element Method

Wang, M.H.; Liu, Zhong Hai; Wang, Hu Jun

doi:10.4028/www.scientific.net/amr.188.216

Cited by 5 publications

(1 citation statement)

References 11 publications

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“…In the modern aviation industry, titanium alloy has become an indispensable material for modern industry due to its good material properties. 1 When it comes to the machining of titanium alloy in the aerospace industry, due to its impact on the fatigue performance of the workpiece, the residual stress achieved in the final machining process becomes important. An extensive experimental research has been carried out in this field that has been reviewed earlier in detail.…”

Section: Introductionmentioning

confidence: 99%

Effect of ultrasonic longitudinal–torsional composite milling of the residual stress on the surface of titanium alloy

Tong

Zhao

Chen

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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The present study envisages the study of the residual stress characteristics of titanium alloy surface, based on the ultrasonic longitudinal–torsional composite milling process. Initially, the tool path analysis of common milling and ultrasonic longitudinal–torsional composite milling was performed. When compared with the common milling, it was found that the tool–chip cycle separation phenomenon occurred in the torsional vibration direction in the ultrasonic milling tool path. Subsequently, an ultrasonic longitudinal–torsional composite milling experimental platform was built and the effects of the ultrasonic amplitude (A), cutting speed ( vf), axial depth of cut ( ap), and feed per tooth ( fz) on the residual stress of titanium alloy were studied using an orthogonal experiment. The results indicated that the residual stress in ultrasonic longitudinal–torsional composite milling comprised a combination of the “plastic bulge effect” caused by cutting force–cutting heat and the “extrusion effect” of the tool flank on the workpiece. The “extrusion effect” was dominant and presented a compressive stress on the machined surface. The ultrasonic amplitude (A) showed the most significant influence on the residual stress. With an increase of the amplitude, the extrusion and collision effect of the tool on the workpiece surface became more obvious, along with a stronger “extrusion effect” between the tool and the workpiece surface. Experimental results provide a good processing method for the difficult-to-machine materials such as titanium alloy, and offers an effective method for obtaining large surface residual compressive stress.

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Section: Introductionmentioning

confidence: 99%