Corrosion Behavior of Wire Electrical Discharge Machined Surfaces of P91 Steel

Bhattacharya, Sova; Abraham, Geogy J.; Mishra, Abhishek; Kain, Vivekanand; Dey, G.K.

doi:10.1007/s11665-018-3558-5

Cited by 12 publications

(8 citation statements)

References 34 publications

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“…The technology application has been extended significantly by the addition of up to six rotating axes [10, 11]. At the same time, the use of new oil-based ecological dielectrics makes the process even more precise and safer for the environment [12, 13, 14, 15, 16]. However, EDM has low productivity and is applicable only for conductive materials [17, 18, 19, 20].…”

Section: Introductionmentioning

confidence: 99%

Electrical discharge machining of ceramic nanocomposites: sublimation phenomena and adaptive control

Grigoriev

Kozochkin

Porvatov

et al. 2019

Heliyon

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The productivity of electrical discharge machining (EDM) is relatively low owing to the natural laws of electrical erosion. Precise EDM demands uninterrupted control of the discharge gap and adjustment of process parameters. It is particularly critical for processing large workpieces with complex linear surfaces and for materials with threshold conductivities such as the new advanced ceramic nanocomposites Al2O3+TiC and Al2O3+SiCw+TiC(30–40%). In these cases, adequate flushing of erosion products is hampered by the geometry of the working space or by the small value of the required discharge gap, which does not exceed 2.2–2.5 μm. The methods of adaptive control in modern computer numerical control systems of EDM equipment based on measuring the electrical parameters in the working zone have been shown to be ineffective in the cases described above. This study aims to investigate the natural phenomena of material sublimation under discharge pulses for conductive ceramics and nanocomposites. The measured conductivities of the samples are higher than the percolation threshold. However, the question of machinability remains open owing to detected processing interruptions and poor quality of machined surfaces. New knowledge on EDM of conductive ceramics and nanocomposites can improve the final quality of the machined surfaces and productivity of the method by the introduction of advanced monitoring and control methods based on acoustic emissions. The manuscript presents an up-to-date overview and current state of the research on the subject area. The obtained morphology of the samples and discussion of the findings complete the experimental part of the study. The scientific basis for a new type of adaptive control system is provided. This can improve the effectiveness of parameter control for machining conductive ceramics and nanocomposites and contribute to an increase in the EDM performance for the most critical cases.

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Section: Introductionmentioning

confidence: 99%

Electrical discharge machining of ceramic nanocomposites: sublimation phenomena and adaptive control

Grigoriev

Kozochkin

Porvatov

et al. 2019

Heliyon

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“…Some more publications related to the EDM of stainless steels and alloys are given in Table 1 WEDM is very complex machining process which used to create high complicated shapes such as tapers, involutes, parabolas and ellipses [30] on hard materials like stainless steel, nitronic austenitic stainless, beryllium copper and titanium, ceramics, metal matrix composites [31], etc. The WEDM process involves a material erosion mechanism by pulsing of direct current between the wire electrode and work piece [32]. WEDM uses electro-thermal based energy to cut electrically conductive material(s).…”

Section: Stainless Steels and Alloysmentioning

confidence: 99%

“…The P91 steel is extensively used for energy-based industries such as reactor components due to its excellent mechanical properties like high creep strength and thermal conductivity, low thermal expansion, good corrosion resistance, [37,38] etc. Bhattacharya et al [32] studied the corrosion behavior of P91 steel material in WEDM process. They stated that WEDMed surfaces have fine passivation than the diamond polished surface.…”

Section: Stainless Steels and Alloysmentioning

confidence: 99%

Machining of Stainless Steels and Alloys Using Non-Traditional Machining Processes

Rudrapati¹

2019

Stainless Steels and Alloys

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Stainless steels and alloys are characterized primarily by their corrosion resistance, high strength, ductility, etc. used for various advanced applications like automotive and aerospace, sugar refineries, construction materials, etc. Many advanced high-speed machineries /systems need fine quality of parts to provide good performance in its working conditions. The machining of stainless steel and its alloys is of interest, because, of its excellent mechanical properties. Stainless steels and alloys are machined generally by traditional machining processes. But complex shapes and features on products are difficult task with the use of traditional metal cutting techniques. To machine the advanced materials to produce high dimensional accuracy and generation of intricate shapes in difficult-to-machine materials like stainless steels and alloys, nontraditional machining (NTM) techniques are now attractive the viable choices. To attain improved machining performance of the NTM processes, it is always necessary to find the optimal combinations of various process input parameters of those processes. In the present chapter, some aspects of machining of stainless steel and alloys using NTM processes such as electric discharge machining (EDM) and wire EDM, are discussed and some concluding remarks have been drawn from the study.

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“…In WEDM, recast layer phenomenon affects the wear behaviour, fatigue life and other functional properties [8][9][10]. This surface damage can largely be managed by using trim cutting after rough cutting operations because it produces surface with low crack density and low surface roughness [11][12] and hence improved corrosion resistance property [13][14][15][16][17][18]. An extensive survey of literature reveals that WEDM modified surface improved the bio-functionality, biocompatibility, osteointegration and cell attachment between implant and human tissues largely.…”

Section: Introductionmentioning

confidence: 99%

Wear and Corrosion Behaviour of Wire Electrical Discharge Machined Ti-6A1-4V alloy

Manderna

Katyal

Gupta

et al. 2022

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

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The objective of the current research work is to study the wear and corrosion behavior of Ti-6Al-4V ELI alloy. WEDM is preferred over conventional machining for Ti alloys, as they are hard-to-machine materials. Wear and corrosion tests were performed using wear and friction monitor (Ducom Model TR20-LE) and electrochemical workstation (Autolab PGSTAT204) respectively. SEM and EDS were also carried out on each sample for evaluating the surface morphology and to know the exact composition of the material. WEDM rough and trim-cut modes improve the surface hardness of Ti-6Al-4V ELI alloy and hence affects their c.o.f. and wear rates. The outcomes of the present research work promote WEDM trim-cut mode over rough-cut mode because it results in lower values of c.o.f., wear and corrosion rates.

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Corrosion Behavior of Wire Electrical Discharge Machined Surfaces of P91 Steel

Cited by 12 publications

References 34 publications

Electrical discharge machining of ceramic nanocomposites: sublimation phenomena and adaptive control

Electrical discharge machining of ceramic nanocomposites: sublimation phenomena and adaptive control

Machining of Stainless Steels and Alloys Using Non-Traditional Machining Processes

Wear and Corrosion Behaviour of Wire Electrical Discharge Machined Ti-6A1-4V alloy

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