Surface treatment by electric discharge machining of Ti–6Al–4V alloy for potential application in orthopaedics

Harcuba, Petr; Bačáková, Lucie; Stráský, Josef; Bačáková, Markéta; Novotná, Katarína; Janeček, Miloš

doi:10.1016/j.jmbbm.2011.07.001

Cited by 97 publications

(41 citation statements)

References 33 publications

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“…As a result, the material is removed from workpice surface with deep and wider crater size. [13,30]. The presence of surface defects and micro-cracks significantly reduced the strength of implant, fatigue performance, as reported previously by Mover et al [18] and Chen et al [30].…”

Section: Resultssupporting

confidence: 74%

“…The capability of EDM to enhance the surface hardness, wear resistance, corrosion resistance and bioactivity of Ti-6Al4V alloy by surface alloying has been reported by bin et al [12]. Harcuba et al reported in his research that EDMed surface promotes cell adhesion on Ti-6Al4V alloy, but high surface roughness and crack density reduced the fatigue performance which results in clinical failure [13]. Further, his co-author reported in their research that fatigue endurance of Ti-6Al4V alloy were severely affected by high surface roughness and crack density [14].…”

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confidence: 90%

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Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Prakash

Kansal

Pabla

et al. 2016

Materials and Manufacturing Processes

176

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The present research is the first type of study, in which the application of powder mixed electrical discharge machining (PM-EDM) for the machining of β-phase titanium (β-Ti) alloy has been proposed. β-Ti alloys are new range of titanium alloys, which has wide spread application in dental, orthopaedics, shape memory, and stents. The aim of the present study is to fabricate submicro-and nano scale topography by PMEDM process to enhance the biocompatibility without affecting machining efficiency. The effect of Si powder concentration along with pulse-current and duration on the surface and machining characteristics has been investigated. A significant decrease in surface crack density on the machined surface with 4 g/l Si powder concentration was observed. When β-Ti alloy was modified at 15 A pulse-current, longer pulse interval with 8 g/l concentration of Si powder particles, the interconnected surface porosities with pore size 200-500 nm was observed. Moreover, at Si powder concentration of 2 and 4 g/l, the recast layer thickness is 8µm and 2-3 µm, respectively. Elemental mapping analysis confirmed that PMEDM also generated carbides and oxides enriched surface, a favourable surface chemistry to enhance the biocompatibility of β-Ti alloy. Furthermore, Downloaded by [George Mason University] at 06:41 22 June 2016 2 PMEDM also enhances the machining performance by improving MRR and reducing TWR.

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Section: Resultssupporting

confidence: 74%

mentioning

confidence: 90%

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Prakash

Kansal

Pabla

et al. 2016

Materials and Manufacturing Processes

176

View full text Add to dashboard Cite

show abstract

“…Kunieda oxygen when used to assist the EDM process increases the IEG and additional 5.6% power is generated because the gas reacts exothermically [9].In wet EDM carbon deposited on the tool and in dry EDM molten material from the workpiece deposited on the tool protect from tool wear [15].EDM has also helped to revolutionize the medical field. Petr Harcuba et al (2012)investigated the properties of Ti-6Al-4V alloy after surface treatment by the electric discharge machining and found that treated surface of alloy provided a better substrate for bone cell growth and found that with higher peak currents mechanical properties degrade [47]. Rossella Surace et al (2016) designed and fabricated a polymeric micro filter for the use in biomedical sciences with the aid of EDM [85].Tassilo-Maria Schimmelpfennig et al (2015) carried out comapritive study of wet and dry EDM and came out with result that dry EDM has lower ringing effect and need sensitive tool drive with micro-piezoelectric actuators [61].…”

Section: Assorted Unprecedented Ideasmentioning

confidence: 99%

Brief Chronological Study of the Evolution of Electrical Discharge Machining

2017

IJSR

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Un-conventional or non-traditional machining methods generally create a phantasm in mind that these are very new. In reality these methods are named so because of the process mechanism in which no shear force is used directly neither there is any contact between tool and workpiece. This does not insinuate that these processes are new because 1694 saw the dawn of EDM when Sir Robert Boyle described the phenomena of electric discharges, 1952 saw the birth of electron beam technology andin the year of 1957 and Gordon Gould designed the first laser device. All these non-traditional processes have developed rapidly in last few decades and are now the state of the art of the present manufacturing technology. Among these EDM has accrued a lot because of its advantages over other non-traditional processes. This accruement is result of various unprecedented ideas those changed the countenance of EDM and made it more efficient and economic process among the non-traditional processes. This paper presents the literature survey to throw light on all those ideas those lead to the current state of the art of EDM.

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“…G. Rajyalakshmi et al [11] investigated the effect of process parameters such pulse on time (T ON ), pulse off time (T OFF ), peak current (I P ), wire feed (WF) on material removal rate (MRR) and surface roughness in WEDM operation and developed models to be used by the machinists to predict the MRR and SR over a wide range of input parameters and optimized multiple responses by particle swarm optimization technique. Petr Harcuba et al [12] investigated the properties of Ti-6Al-4V alloy after surface treatment by the electric discharge machining (EDM) process. The EDM process with high peak currents proved to induce surface macroroughness and to cause chemical changes to the surface.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Micro WEDM Process Parameters for Machining on TI-6AL-4V Alloy

2016

IJSR

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This works presents the experimental investigation to determine the optimum parametric setting for the effective and efficient machining of Ti-6Al-4V alloy by using of Wire EDM process. The Taguchi method, a statistical method for experimental design, has been used to optimize the WEDM process parameters. An L 25 orthogonal array was used to determine the S/N ratio, based on Taguchi quality design Concept, so as to indicate the significant machining parameters affecting the machining performance i.e. Material removal rate, and Surface roughness. The machining results were obtained by variation of Duty cycle at five different levels (30,40,50,60 and 70%), wire tension at five different levels (3,6,9,12 and 15kg-f) , peak current at five different levels (50,75,100,125 and 150A), and wire feed at five different levels (5,6,7,8 and 9mm/min.). It is noted that the maximum mean of material removal rate (MRR) is 59.06mm 3 /min and the minimum mean of surface roughness (SR) is 1.234 Ra. The optimum combination parameters for higher MRR are Duty cycle 70%, wire tension 3 kg-f , peak current 125 A, and wire feed rate 5 mm/min. The optimum combination parameters for lower surface roughness are Duty cycle 30%, wire tension 6 kg-f , peak current 125 A, and wire feed rate 8 mm/min.

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Surface treatment by electric discharge machining of Ti–6Al–4V alloy for potential application in orthopaedics

Cited by 97 publications

References 33 publications

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Brief Chronological Study of the Evolution of Electrical Discharge Machining

Optimization of Micro WEDM Process Parameters for Machining on TI-6AL-4V Alloy

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