Experimental Study on High Speed Milling of γ-TiAl Alloy

Ge, Ying Fei; Fu, Yu Can; Xu, Jiu Hua

doi:10.4028/0-87849-430-8.6

Cited by 8 publications

(13 citation statements)

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“…The results are as follows: F σAx =17.197＞F 0.01 (3,5) (3,5)=5.41, which means a good regression effect.…”

Section: Linear Regression Model Predictionmentioning

confidence: 88%

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Residual Stress in Disc Milling Grooving of Titanium Alloy

Xin¹,

Shi²

2017

dtetr

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ABSTACT: In the present study, the formation mechanism and distribution rule of residual stress in disc milling grooving of titanium alloy were studied. The residual stress was measured by x ray diffraction method. First, a polybasic linear regression model about residual stress was established by linear regression technology, which was tested by "F" method. Then, the effect of milling parameters (spindle speed, depth of cut and feed speed) on residual stress was investigated. The results showed that σ Ax and σ Ay (σ Ax and σ Ay represented the residual stress of machined surface made by the tool main cutting edge in x and y directions, respectively) increased with the increase of depth of cut and feed speed, but decreased with the increased spindle speed. For σ Bx (σ Bx represented the residual stress of machined surface made by the tool minor cutting edge in x direction), the residual stress decreased with the increase of spindle speed and depth of cut, but increased with the increase of feed speed. The effect of feed speed on σ Ax and σ Ay was most obvious, then was spindle speed. σ Bx was most sensitive to depth of cut, then was feed speed, the last was spindle speed. Residual compressive stress was observed on all machined surface and subsurface. In addition, the residual stress on A surface and subsurface was bigger than B surface and subsurface, it was due to the combination effect of milling force and milling heat.

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“…The results are as follows: F σAx =17.197＞F 0.01 (3,5) (3,5)=5.41, which means a good regression effect.…”

Section: Linear Regression Model Predictionmentioning

confidence: 88%

“…Small residual stress and harden layer can be obtained by high speed milling operation (Ge et al, 2007). With increasing spindle speed, milling surface quality becomes better (Du et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Residual Stress in Disc Milling Grooving of Titanium Alloy

Xin¹,

Shi²

2017

dtetr

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“…At present, the high-speed machining demonstrates the desirable superiority in the processing of titanium alloys. A good number of experiments have presented evidence suggesting that the surface of titanium alloys processed by high-speed machining produces low surface roughness, small depth of hardening layer, and low residual stress [7,8]. Therefore, highspeed machining is an ideal processing method for titanium alloys to improve the processing efficiency and the surface quality and prolong the fatigue life of titanium alloy components.…”

Section: Please Scroll Down For Articlementioning

confidence: 98%

Spindle Speed Selection for High-Speed Milling of Titanium Alloy Curved Surface

Zhang

Wang

et al. 2014

Materials and Manufacturing Processes

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The development of high-speed milling technology provides an effective processing method for titanium alloy curved surface with high quality, and the spindle speed is an important machining parameter for the high-speed milling of titanium alloy curved surface. The variation of the geometric features of the titanium alloy curved surface results in the sharp fluctuation of the cutting force as well as the vibration of machine tool, which not only makes a severe impact on the surface machining quality and the tool life but also greatly affects the efficiency of the high-speed milling. An experimental study is carried out to determine the spindle speed for high-speed milling of the titanium alloy curved surface based on the cutting force. The experimental results indicate that in high-speed milling process, the cutting force is associated with the geometric feature of the curved surface and the change of cutting force is relatively smooth when the spindle speed is in the range from 9000 to 13,000 rpm for the machining of titanium alloy curved surface.

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“…Other studies [24,25] compared the machining processes directly. Settineri et al [26] analyzed three different titanium aluminides in turning and milling processes.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Coolants in Machining of Titanium Aluminides

Finkeldei¹,

Bleicher²

2016

DAAAM Proceedings

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Titanium and nickel based alloys are two types of industrially used materials. Especially in aerospace and automotive industry, the intermetallic titanium aluminides tend to replace these prevailing materials. Their density is only a half of nickel based alloys and a high strength at room temperature and hot condition is retained. But the high reaction affinity against tool materials, their low Youngs modulus and low heat conductivity cause difficulties in machining. During the machining process, low heat conductivity leads to high thermal loading of tools and therefore a well-directed cooling strategy is necessary. In this paper an overview about different cooling strategies, such as cryogenic carbon dioxide cooling and minimum quantity lubrication of the titanium aluminide Ti-48Al-2Cr-2Nb is shown. Based on a literature research and the experiments conducted in this investigation, cryogenic cooling is a reliable option for reducing toolwear.

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Experimental Study on High Speed Milling of γ-TiAl Alloy

Cited by 8 publications

References 0 publications

Residual Stress in Disc Milling Grooving of Titanium Alloy

Residual Stress in Disc Milling Grooving of Titanium Alloy

Spindle Speed Selection for High-Speed Milling of Titanium Alloy Curved Surface

Investigation of Coolants in Machining of Titanium Aluminides

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