Determination of Residual Stress Distribution in High Strength Aluminum Alloy After Edm

Mehmood, Shahid; Sultan, Amir; Anjum, Nazeer Ahmad; Anwar, Waqas; Butt, Zubair

doi:10.12913/22998624/68729

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…In [13], authors determined the effect of using deionized water, kerosene oil and water in oil emulsion as dielectric liquid on C35 carbon steel and found that microcracks formed with water as a dielectric liquid had little penetrations as compared to the kerosene oil. The consequent residual stresses increase below the surface reaching maximum value [14,15]. In [16], authors studied the effect of oil based, de-ionized water, gracious and commercial water based dielectric liquids and found that water and gracious based dielectric liquids offer good MRR and are health friendly.…”

Section: Introductionmentioning

confidence: 99%

Machining and Surface Characteristics of AISI 304L After Electric Discharge Machining for Copper and Graphite Electrodes in Different Dielectric Liquids

Anjum¹,

Shah²,

Anjum³

et al. 2017

Eng. Technol. Appl. Sci. Res.

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In Electric Discharge Machining (EDM), the thermal energy used for material erosion depends on the intensity of electric sparks, the thermal conductivities of electrode material and the dielectric liquid. In this paper, the effect of EDM on AISI 304L steel is studied using copper and graphite electrodes and distilled water and kerosene oil as dielectric liquids. Material Removal Rates (MRR), Tool Wear Rates (TWR) and surface conditions are calculated for four different combinations with the two electrode materials and the two dielectric liquids. These investigations are carried out at different pulse currents. Machined surfaces are evaluated by morphological studies, energy dispersive spectrographs (EDS) and white layer thickness using Scanning Electron Microscopy (SEM). It is found that a transfer of carbon takes place from the kerosene oil and the graphite electrodes into the machined surface which alters the metallurgical characteristics, depending on the electrical and thermal conductivities of the electrode material and the dielectric liquid.

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Section: Introductionmentioning

confidence: 99%

Machining and Surface Characteristics of AISI 304L After Electric Discharge Machining for Copper and Graphite Electrodes in Different Dielectric Liquids

Anjum¹,

Shah²,

Anjum³

et al. 2017

Eng. Technol. Appl. Sci. Res.

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“…The residual stresses were measured in accordance with the methodology described in [22][23][24][25]. Residual stresses analysis was carried out by X-ray diffractometry using the Xstress 3000 robotic complex (Stresstech Oy, Jyväskylä, Finland) arrangements, considering the material parameters given in Table 2.…”

Section: Methodsmentioning

confidence: 99%

Investigation of Plasma-Electrolytic Processing on EDMed Austenitic Steels

et al. 2023

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This study investigates the effect of electrolytic plasma processing on the degree of defective layer removal from a damaged layer obtained after manufacturing operations. Electrical discharge machining (EDM) is widely accepted in modern industries for product development. However, these products may have undesirable surface defects that may require secondary operations. This work aims to study the die-sinking EDM of steel components followed by the application of plasma electrolytic polishing (PeP) to enhance the surface properties. The results showed that the decrease in the roughness of the EDMed part after PeP was 80.97%. The combined process of EDM and subsequent PeP makes it possible to obtain the desired surface finish and mechanical properties. In the case of finishing EDM processing and turning, followed by PeP processing, the fatigue life is enhanced without failure up to 109 cycles. However, the application of this combined method (EDM + PeP) requires further research to ensure consistent removal of the unwanted defective layer.

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“…The morphology and roughness of the surfaces after EDM [1][2][3][4][5]7,8,[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] The melting of the treated surface is accompanied by a change in its structure, the grain is refined, and zones of plastic deformation appear. Surface roughness after EDM is characterized by a set of mutually intersecting single holes.…”

Section: Topic Of Study Sources Key Positionsmentioning

confidence: 99%

Study of the Structure and Mechanical Properties after Electrical Discharge Machining with Composite Electrode Tools

et al. 2022

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Our study was devoted to increasing the efficiency of electrical discharge machining of high-quality parts with a composite electrode tool. We analyzed the chemical composition of the surface layer of the processed product, microhardness, the parameter of roughness of the treated surface, residual stresses, and mechanical properties under tension and durability with low-cycle fatigue of steel 15. Our objective was to study the effect of the process of copy-piercing electrical discharge machining on the performance of parts using composite electrode tools. The experiments were carried out on a copy-piercing electrical discharge machining machine Smart CNC using annular and rectangular electrodes; electrode tool materials included copper, graphite, and composite material of the copper–graphite system with a graphite content of 20%. The elemental composition of the surface layer of steel 15 after electrical discharge machining was determined. Measurements of microhardness (HV) and surface roughness were made. Residual stresses were determined using the method of X-ray diffractometry. Metallographic analysis was performed for the presence of microdefects. Tensile tests and low-cycle fatigue tests were carried out. The mechanical properties of steel 15 before and after electrical discharge machining under low-cycle fatigue were determined. We established that the use of a composite electrode tool for electrical discharge machining of steel 15 does not have negative consequences.

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Determination of Residual Stress Distribution in High Strength Aluminum Alloy After Edm

Cited by 10 publications

References 23 publications

Machining and Surface Characteristics of AISI 304L After Electric Discharge Machining for Copper and Graphite Electrodes in Different Dielectric Liquids

Machining and Surface Characteristics of AISI 304L After Electric Discharge Machining for Copper and Graphite Electrodes in Different Dielectric Liquids

Investigation of Plasma-Electrolytic Processing on EDMed Austenitic Steels

Study of the Structure and Mechanical Properties after Electrical Discharge Machining with Composite Electrode Tools

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