Wear behavior of wire electric discharge machined surface of 316L stainless steel

Prathipati, Raju; Dora, Siva Prasad; Chanamala, Ratnam

doi:10.1007/s42452-020-2244-z

Cited by 12 publications

(10 citation statements)

References 20 publications

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“…Statistical measures (average and standard deviation) of maximum (κ 1 ), minimum (κ 2 ), mean (H), and Gaussian (K) curvature were determined for the range of scales between 1 and 66 µm. Both signed and unsigned curvature were considered here [23]. All curvature computations were performed using Wolfram Mathematica software (version 12, Wolfram Research, Oxfordshire, UK).…”

Section: Multiscale Curvature Analysismentioning

confidence: 99%

“…The energy of electric discharges, as the main factor influencing the surface topography, also indirectly determines the technological and functional properties of the surface, including microstructure and microhardness [21], corrosion behavior [22], wear resistance [23], and wettability [24]. Knowledge of the correlation between these parameters enables the design of the required surface properties by controlling the EDM parameters [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

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Discharge Energy as a Key Contributing Factor Determining Microgeometry of Aluminum Samples Created by Electrical Discharge Machining

2021

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The aim of this study is first to determine the effect of the discharge energy on the surface microgeometry of aluminum samples created by electrical discharge machining (EDM). Secondly, an additional purpose is to demonstrate the differences between the geometric multiscale methods: length-, area-scale, and curvature. Eleven samples were manufactured using discharge energies ranging from 0.486 mJ to 1389.18 mJ and, subsequently, measured with focus variation microscopy. Standard ISO and multiscale parameters were calculated and used for surface discrimination and regression analysis. The results of linear, logarithmic, and exponential regression analyses revealed a strong correlation (R2 > 0.9) between the geometrical features of the surface topography and the discharge energy. The approach presented in this paper shows that it is possible to shape surface microgeometry by changing the energy of electrical discharges, and these dependencies are visible in various scales of observation. The similarities of the results produced by curvature and length-scale methods were observed, despite the significant differences in the essence of those methods.

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Section: Multiscale Curvature Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Discharge Energy as a Key Contributing Factor Determining Microgeometry of Aluminum Samples Created by Electrical Discharge Machining

2021

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“…7c, d and iron-chromium (Fe-Cr). During EDM, the substantial reaction between molten base elements, dielectric fluid (i.e., water) and electrode particles results in the formation of oxides, phosphides and carbides on the surface [40,41]. These oxides and phosphide contributed to the bioactivity and enhanced the corrosion resistance of the machined surface [42][43][44].…”

Section: Edx and Xrd Investigationmentioning

confidence: 99%

Examination of hemocompatibility and corrosion resistance of electrical discharge-treated duplex stainless steel (DSS-2205) for biomedical applications

Mahajan

Sidhu²,

Devgan

2020

Appl. Phys. A

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The present article focuses on the electrical discharge treatment of duplex stainless steel (DSS-2205) to enhance its biological responses and corrosion resistance. Electrical discharge machining (EDM) was executed at different spark energy levels (by varying input factors) and 18 different morphological DSS substrates were prepared according to the L18 experimental array. Further, an electrochemical potentiodynamic test was performed on the unmachined and treated surfaces to investigate the corrosion performance. Moreover, the high corrosion resistance substrates along with untreated specimen were further analyzed for the in-vitro interaction with human red blood cells. The results claimed that the surface treatment by EDM significantly enhances the corrosion resistance (< 90%) as well as the biological responses of DSS alloy. The current of 10A, on-time = 60 µs, off-time = 150 µs, machining with W-Cu electrode in deionized water was witnessed as the best set of parameters in both corrosion and hemocompatibility test. Thus, surface alteration of DSS-2205 by EDM can be believed as a promising technique for improving the corrosion resistance and biological responses that essential for biomedical applications.

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“…Their main parameters of interest were pulse duration and tool electrode only. R. Prathipati et al [ 37 ] investigated the wear resistance of AISI 316L machined with wire EDM. However, only electrical parameters of EDM were altered with one type of electrode and dielectric.…”

Section: Introductionmentioning

confidence: 99%

“…However, only electrical parameters of EDM were altered with one type of electrode and dielectric. Due to little information on tribological performance of recast layers [ 36 , 37 ], a more in-depth study is warranted.…”

Section: Introductionmentioning

confidence: 99%

Tribological Characterization of Electrical Discharge Machined Surfaces for AISI 304L

et al. 2022

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Surface treatments are normally carried out after machining. Surface treatment is a costly and time-consuming process. Hence, it makes sense to reduce the requirement of surface treatment as much as possible. Electrical Discharge Machining (EDM) is a frequently used machining process. EDM produces a recast layer on the surface of machined components. The tribological performance of this recast layer is not very well understood. The properties of the recast layer formed as a result of EDM depend upon the discharge current, electrodes and dielectrics. This work aims to study the effects of each on the tribological performance – in terms of the wear depth, friction coefficient, friction force and contact surface temperature of recast layers. Subsequent improvement in the quality of surfaces will significantly reduce the cost and time required to treat surfaces after machining. Hence, various combinations of discharge current, dielectrics and electrodes have been used to characterize and deduce their effects. The tribo-tests are performed in the boundary lubrication regime under pin-on-disc configuration to analyze sliding friction, contact surface temperature and the wear of the recast layers formed on AISI 304L. The surface morphology of the test pins has been performed by Scanning Electron Microscopy (SEM) before and after the tests. The results show that indeed it is possible to control the tribological performance of the recast layers by varying EDM parameters. This approach promises to be a useful methodology to improve the tribological performance of the layers formed after EDM and reduce the time and costs required for surface treatments post machining.

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Wear behavior of wire electric discharge machined surface of 316L stainless steel

Cited by 12 publications

References 20 publications

Discharge Energy as a Key Contributing Factor Determining Microgeometry of Aluminum Samples Created by Electrical Discharge Machining

Discharge Energy as a Key Contributing Factor Determining Microgeometry of Aluminum Samples Created by Electrical Discharge Machining

Examination of hemocompatibility and corrosion resistance of electrical discharge-treated duplex stainless steel (DSS-2205) for biomedical applications

Tribological Characterization of Electrical Discharge Machined Surfaces for AISI 304L

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