Electrical discharge machining of a NiAlFe ternary shape memory alloy

Chen, S.L.; Hsieh, Shu-Feng; Lin, Hung-Yin; Lin, Ming-Hong; Huang, J.S.

doi:10.1016/j.jallcom.2007.10.012

Cited by 39 publications

(22 citation statements)

References 25 publications

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“…The EDM machining of shape memory alloys using copper electrodes was made by Chen et al [39]. As workpiece materials they used TiNiZr and TiNiCr ternary shape alloys, evaluating the MRR, TWR and surface roughness as functions of the discharge current and discharge duration.…”

Section: Edm Of Metals and Their Alloysmentioning

confidence: 99%

Materials used for sinking EDM electrodes: a review

Czelusniak

Higa

Torres

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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Over the years, sinking electrical discharge machining has become one of the most important production technologies to manufacture very accurate three-dimensional complex components on any electrically conductive material. This article reports a literature review on the diversity of conventional and non-conventional materials that are used or have potential to be used as EDM electrodes. In addition, additive manufacturing of EDM electrodes are also reviewed. Keywords Sinking electrical discharge machining • EDM electrodes • Materials for electrodes • Additive manufacturing List of symbols î e Discharge current (A) t 0 Pulse interval time (μs) p in Dielectric inlet pressure (Pa) t d Ignition delay time (μs) t e Discharge duration (μs) t i Pulse duration (μs) t p Pulse cycle time (μs) u e Discharge voltage (V) û i Open-circuit voltage (V) V e Electrode wear rate (mm 3 /min) V w Material removal rate (mm 3 /min) W e Discharge energy (J)

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Section: Edm Of Metals and Their Alloysmentioning

confidence: 99%

Materials used for sinking EDM electrodes: a review

Czelusniak

Higa

Torres

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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“…By the increasing improvement in applying shape memory alloys especially applying Nitinol alloy in different industries and also by taking into account that machining of smart materials with conventional techniques is a difficult way of cutting because of the high malleability, the extensive hard work, and reducing the quality of work piece that results in equipment depreciation in addition to that little precision and speed of machining cause undesirable effects on the properties of the surface of materials, the study of new machining methods like WEDM as one of the best choices in industry and also the study of the effects of these methods on surface properties of smart alloys seem necessary. By eliminating its inefficiency and problems, it would be possible to achieve more precision and accuracy besides the maximum work speed [11][12][13][14]. Chip sampling by electric discharge is an electrothermal process considering heat and electricity [15].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Operational Cutting Parameters on Nitinol-60 in Wire Electrodischarge Machining

LotfiNeyestanak

Daneshmand

2013

Advances in Materials Science and Engineering

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Shape memory alloys are a kind of active materials, which have significant characteristics in comparison with other alloys. Since these materials are applicable in different fields such as aerospace, automobile industry, medicine, and dentistry, the effects of wire electrodischarge machining on the properties of these alloys have been studied. In this paper, changes in the shape recovery ability and microhardness of the machined surface of Nitonol-60 shape memory alloy have been studied considering recasting and formation of resolidificated layer on the shape memory alloy surface. XRD and EDXA analyses of the surface layer of the sample besides a microscopic study of the shape memory alloy layer by SEM and a study of the changes in mechanical properties of the surface layer were done by performing microhardness and tension tests on the work piece surface. Considering the surface layer, reversible strain has been studied according to the shape recovery percentage of Nitinol-60 shape memory alloy. Results show that the surface layer formed on the surface of the samples has caused changes in both physical and mechanical properties of the cut surface because of the penetration of the separated materials in comparison with deeper layers of the piece.

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“…Electrical-discharged machining (EDM) technology has been extensively adopted to remove and modify the properties of various materials [18][19][20][21][22][23][24][25]. Additionally, a machined surface modified by EDM using a silicon electrode exhibits excellent corrosion and wear resistance [25].…”

Section: Introductionmentioning

confidence: 99%