Experimental Study of Machining Characteristics of Titanium Alloy (Ti–6Al–4V)

Sharma, Ajay; Sharma, Mukund Dutt; Sehgal, Rakesh

doi:10.1007/s13369-012-0451-7

Cited by 22 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Titanium and its alloys have been used widely in many areas, such as aerospace, chemical, biomedical, and automotive industries, due to their outstanding properties [1][2][3][4]. These prominent properties include a high strength-to-weight ratio, strong corrosion resistance, and the ability to retain high strength at high temperature [5,6]. However, titanium alloys are classified as difficult-to-machine materials due to high chemical reactivity, low thermal conductivity, and low modulus of elasticity [7].…”

Section: Introductionmentioning

confidence: 99%

“…According to previous studies, the life of uncoated carbide tool is less than 6 min under dry condition, and serious crater wear and adhesive wear occur when machining Ti6Al4V (TC4) [13]. There are several kinds of coating, such as TiAlN, TiCN, CrAlSiN, TiAlSiN, AlMgB 14 -TiB 2 and so on [6,[14][15][16][17]. TiAlN coating is one kind of excellent coating and possesses strong chemical stability and good resistance of oxidation wear at 900 • C [18].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Machining Performance of TiAlN-Coated Cemented Carbide Tools with Chip Groove in Machining Titanium Alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B

Ren

Zhang

et al. 2018

Metals

View full text Add to dashboard Cite

In this paper, TiAlN-coated cemented carbide tools with chip groove were used to machine titanium alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B under dry conditions in order to investigate the machining performance of this cutting tool. Wear mechanisms of TiAlN-coated cemented carbide tools with chip groove were studied and compared to the uncoated cemented carbide tools (K20) with a scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The effects of the cutting parameters (cutting speed, feed rate and depth of cut) on tool life and workpiece surface roughness of TiAlN-coated cemented carbide tools with chip groove were studied with a 3D super-depth-of-field instrument and a surface profile instrument, respectively. The results showed that the TiAlN-coated cemented carbide tools with chip groove were more suitable for machining TC7. The adhesive wear, diffusion wear, crater wear, and stripping occurred during machining, and the large built-up edge formed on the rake face. The optimal cutting parameters of TiAlN-coated cemented carbide tools were acquired. The surface roughness Ra decreased with the increase of the cutting speed, while it increased with the increase of the feed rate.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Machining Performance of TiAlN-Coated Cemented Carbide Tools with Chip Groove in Machining Titanium Alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B

Ren

Zhang

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…The maximum MRR (approximately calculated by the removed material and tool life) obtained was about 17,335 mm 3 /min (the removed material 23.75 cm 3 , cutting speed 400 m/min, feed rate 0.125 mm/r, and depth of cut 0.125 mm), but the tool life was less than 2 min. Additionally, the best performance in terms of tool life (39.8 min) and the amount of removed material (247.95 cm 3 ) was observed at cutting speed of 400 m/min, feed rate of 0.075 mm/r, and cutting depth of 0.075 mm, the corresponding MRR was about 6236 mm 3 /min. It can be concluded that for the traditional cutting processes, the excessive tool wear leads to high machining costs and restricts the improvement of the machining efficiency.…”

Section: Introductionmentioning

confidence: 88%

“…Titanium alloys, however, are regarded as difficult-to-cut materials [3]. Generally, most of the components of titanium are manufactured by traditional machining techniques such as turning [4][5][6][7], milling [8,9], drilling [10], and grinding [11], etc.…”

Section: Introductionmentioning

confidence: 99%

Study on blasting erosion arc machining of Ti–6Al–4V alloy

Chen

et al. 2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Blasting erosion arc machining (BEAM) was applied to improve the machining efficiency of Ti-6Al-4Valloy. 5-factor, 2-level fractional factorial experiment was firstly employed to find out the main factors for MRR (material removal rate). According to the results of fractional factorial experiment, 3-factor, 2-level full factorial experiment was conducted to find out the relationship between machining performance and the main factors (peak current, pulse duration, and pulse interval) under the negative electrode machining. Results revealed that when peak current was 500 A and pulse duration was 8 ms, MRR could achieve 16,800 mm 3 /min, which means the specific energy efficiency was 33.6 mm 3 / (A · min). Then, MRR was optimized base on MATLAB optimization toolbox and could reach 20,100 mm 3 /min when adopting the optimized parameters (peak current 600 A, pulse duration 8.8 ms, and pulse interval 3.0 ms). Although TWR (tool wear ratio) can be effected by the machining parameters, it appeared to be stable (around 3 ± 1 %). Besides, the polarity effect was also studied, and flow field simulations were employed to illustrate the influence of feeding direction on the surface roughness. In addition, the machined surface was analyzed by utilizing SEM, EDS, XRD, etc. Results of the surface analysis disclosed that the oxygen content in the negative electrode machined surface was obviously higher than that in the positive electrode machined surface. Since the positive electrode machined surface was much smoother, it can be used to improve the surface quality while the negative electrode machining is suitable for the bulk material removal with high energy. Finally, a Ti-6Al-4V turbine blade sample was machined to demonstrate the feasibility of high efficiency BEAM in difficult-to-cut material processing.

show abstract

“…Main reasons for use in these industries are their superior properties like high strength, low density and high temperature and corrosion resistance. On the other hand titanium alloys poses difficulty in machining due to low thermal conductivity, chemical reaction with tool, variation of chip thickness and residual stress [1,2]. Tables 1 and 2 shows the mechanical properties and chemical composition of Ti-6Al-4V.…”

Section: Introductionmentioning

confidence: 99%

Prediction of residual stress using RSM during turning of Ti–6Al–4V with the 3D FEM assist and experiments

Sahu

Andhare

2019

SN Appl. Sci.

View full text Add to dashboard Cite

Machining of titanium alloy is known to be complex due to problems like low thermal conductivity, high thermal and residual stresses, chemical reactions, phase transformation during process, etc. These complexities affect the quality of surface produced and hence the performance of machined components. In the evaluation of surface integrity of machined components, residual stresses are the most critical response as it affects fatigue life of component. Present work aimed at developing prediction model for the residual stress induced due to machining of Ti-6Al-4V. 3D finite element simulations are performed to determine residual stress in turning of Ti-6Al-4V using carbide inserts. Simulations are performed in sequential manner using design of experiments through response surface methodology and an empirical model is developed. Later on actual machining is performed for few of the experimental runs and residual stresses are measured through X-ray diffraction method and the simulation results are compared with experimental results. These results are found in good agreement with average absolute error of 11%. The influence of the feed rate, cutting speed and depth of cut variations on the induced residual stress is investigated and analysed using analysis of variance. Results show that magnitude of surface compressive residual stress increases with cutting speed and depth of cut whereas it reduces with feed rate. Additionally, optimization was done with response surface desirability approach for optimum cutting parameters to maximize surface compressive residual stress. Optimum cutting parameters were found as cutting speed 171.4 m/min (1704.5 RPM), feed rate 0.07 mm/rev and 0.8 mm depth of cut (doc) with corresponding residual stress as − 1495.97 MPa.

show abstract

Experimental Study of Machining Characteristics of Titanium Alloy (Ti–6Al–4V)

Cited by 22 publications

References 18 publications

Machining Performance of TiAlN-Coated Cemented Carbide Tools with Chip Groove in Machining Titanium Alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B

Machining Performance of TiAlN-Coated Cemented Carbide Tools with Chip Groove in Machining Titanium Alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B

Study on blasting erosion arc machining of Ti–6Al–4V alloy

Prediction of residual stress using RSM during turning of Ti–6Al–4V with the 3D FEM assist and experiments

Contact Info

Product

Resources

About