Electrochemical Machining of High-temperature Titanium Alloy Ti60

Xu, Zhengyang; Chen, Xuezhen; Zhou, Zesheng; Qin, Peng; Zhu, Daiyin

doi:10.1016/j.procir.2016.02.206

Cited by 81 publications

(28 citation statements)

References 16 publications

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“…Presently, the ECM is used not only for the airfoil machining, but also in treating of bladed discs; in particular, the work [1] provides the experimental ECM data for the Ti60 titanium alloy which is used in the manufacture of bladed discs for the gas turbine engine compressor. The machining results for interblade areas of the blisk of the given alloy were obtained ensuring high precision of the blade profile (the profile error of 0.05...0.07 mm).…”

Section: Methodsmentioning

confidence: 99%

Effect of technological heredity on the fatigue strength in the manufacture of gas turbine engine blades

Смирнов

Проничев

Нехорошев

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In the study, the task of researching of the finishing-strengthening machining stage of gas turbine engine compressor blades manufactured of titanium and nickel-chromium alloys in order to extend their service life was solved. The application of electrochemical pulse machining as a technological heredity barrier was substantiated since this method allows a considerable decrease of the residual stress and surface layer work hardening. To ensure the extended service life of blades, the conditions for the subsequent finishing-strengthening machining were identified.

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Section: Methodsmentioning

confidence: 99%

Effect of technological heredity on the fatigue strength in the manufacture of gas turbine engine blades

Смирнов

Проничев

Нехорошев

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Polarization curves were measured to evaluate the electrochemical characteristics of the γ-TiAl materials in different ECM electrolytes [10]. Prior to the measurements, the γ-TiAl wires pretreated with concentrated HNO 3 for 10 seconds followed by rinsing with copious amount of water and ethanol and dried.…”

Section: E Polarization Curvesmentioning

confidence: 99%

“…While machining small, precise and intrinsic features, a problem of tool wear, low precision and time consumption have been observed. Thermal and mechanical stresses induced during machining leads to damaged rim zone surface [1], [9], [10].…”

Section: Introductionmentioning

confidence: 99%

“…Dissolution of titanium happens in the transpassive region which causes absorption of more energy. The reason to this may be, initially it destroys the passivation layer and secondly removes the large amount of material due to formation of passivation layer [10]. Present research focuses on the anodic dissolution of γ-TiAl with their commercial names as GE 48-2-2, TNM B1 and TNB V5 using different ECM electrolytes like 1 M NaCl, 1 M NaNO 3 and 1 M KBr.…”

Section: Introductionmentioning

confidence: 99%

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2019

IJEAT

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Investigation of temperature resistant lightweight materials used in airplane components with higher thermal efficiency gaining importance. These materials possess challenges and replace twice dense nickel (Ni) based super alloys presently found application in aeroplane industry. In this article, anodic dissolution of commercial gamma titanium aluminide (γ-TiAl) alloys; GE 48-2-2, TNM B1 and TNB V5 were investigated. These are potential materials to be used for manufacturing low pressure turbine blades by electrochemical machining. The materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD confirms the presence of two phases Ti3Al, α2 (13.8%) and TiAl, γ (86.2%). SEM shows the porous surface after the anodic dissolution. It has been found that 1 M KBr is the most effective electrolyte for the dissolution followed by NaCl and NaNO3. The effect of temperature, electrolyte concentration, passivation and rotation speed were evaluated. The dissolution potential of TNB V5 found to be high could be due to the presence carbon content which may lead to the high creep resistance in the material.

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“…Despite considerable harmfulness for environment (mainly harmful electrolytes and fumes), ECG occupies the leading position as far as titanium alloys' machining is concerned [14].…”

Section: Hybrid Processesmentioning

confidence: 99%

Electrochemical Grinding of Titanium-Containing Materials

Przystupa

Litak

2017

Adv. Sci. Technol. Res. J.

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ABSTRACT:The paper focuses on machining difficult-to-cut materials where a significant component is titanium. The paper discusses a complex process of electrochemical grinding (ECG). A practical example was given by discussing the results of ECG. Selected difficult-to-cut materials, along with their typical ECG properties, were compared. In addition, the paper discusses the phenomenon of micro short-circuits constituting a form of an interference characteristic for the process. The results presented in the paper refer to the phenomenon of a micro short-circuits, i.e. the case when a rapid and uncontrolled electrical discharge occurs in the machining zone. The paper presents examples of recorded micro short-circuits and attempts a time-frequency analysis regarding the occurrence of the disturbance. To reveal the dynamics of the ECG process we applied wavelet analysis.

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Electrochemical Machining of High-temperature Titanium Alloy Ti60

Cited by 81 publications

References 16 publications

Effect of technological heredity on the fatigue strength in the manufacture of gas turbine engine blades

Effect of technological heredity on the fatigue strength in the manufacture of gas turbine engine blades

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Electrochemical Grinding of Titanium-Containing Materials

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