Effect of different machining parameters on surface roughness of aluminium alloys based on Si and Mg content

Sadiq, Taoheed Olohunde; Hameed, Baloch Abdul; Idris, Juferi; Olaoye, Olusegun Solomon; Nursyaza, Siti; Samsudin, Zul Hairi; Hasnan, Mohamad Imran

doi:10.1007/s40430-019-1948-8

Cited by 14 publications

(5 citation statements)

References 17 publications

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“…The chip formation is affected by many parameters which the cutting conditions, the workpiece material, and the tool geometry. 53 Continuous chips usually occur during the drilling of ductile workpiece materials at high cutting speeds. Very good surface quality is obtained by continuous chip formation, but this can be damaging to the machine, tools and operator.…”

Section: Resultsmentioning

confidence: 99%

Influence of extrusion parameters on drilling machinability of AZ31 magnesium alloy

Köklü

Koçar

Morkavuk

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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AZ31 magnesium alloy is mainly used in aerospace applications due to its lightweight and good mechanical properties. The installation of AZ31 alloy in an aircraft usually requires machining operations such as drilling and milling for assembly purposes. The current study aims to investigate the effects of different extrusion ratios (1.77, 2.68, 3.55) on the drilling machinability of AZ31 alloys. The machinability was evaluated with thrust force, borehole surface quality, and chip characteristics. It was found that the thrust force and hole quality depend on the extrusion ratio and cutting parameters. The highest thrust force and surface roughness Ra occurred when drilling AZ31 alloy produced using the highest extrusion ratio of 3.55 in agreement with the improvement in the mechanical properties. The chip length decreased with the increase of the extrusion ratio depending on a decrease in the ductility, while SEM images showed that the AZ31 sample produced using intermediate extrusion ratio had the best hole edge quality and least burr formation.

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Section: Resultsmentioning

confidence: 99%

Influence of extrusion parameters on drilling machinability of AZ31 magnesium alloy

Köklü

Koçar

Morkavuk

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Machinability tests were accomplished under dry cutting conditions in CNC vertical machining center using different V (50, 80 and 110 m/min), f (0.08; 0.16 and 0.24 mm/rev) and constant DoC (1 mm) parameters [22,23]. Two flute uncoated carbide end mills with diameter of Ø6 mm and 30 o helix angle were used in the machinability tests.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Machinability Performances in Milling of Al-7Si-Mg and Al-7Si-0.6Mg Alloys

ALPARSLAN¹,

Bayraktar²

2023

ICAENS

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In this study, the microstructural, mechanical and machinability properties of Al-7Si-Mg and Al-7Si-0.6Mg casting alloys were experimentally researched. While the microstructures of the alloys were determined by optical microscope, the hardness values were determined by Brinell method, elongation to fracture, yield (YS) and tensile strength (TS) values were measured by tensile tests. Milling experiments were performed 6 mm diameter of uncoated carbide end mill which two flutes in CNC vertical machining center using different cutting speeds (V), feed rates (f) and a constant depth of cut (DoC). In microstructural examinations, it was observed that the microstructure of the Al-7Si-Mg alloy comprised of a-Al, primary Si, eutectic Al-Si, Mg2Si, B-Al(Fe, Mn)Si, β-Al5FeSi and π-AlSiMgFe phases. In addition to the existing phases, B-Al8Mg3FeSi6 phase was formed in the microstructure of the Al-7Si-0.6Mg alloy. Al-7Si-0.6Mg alloy exhibited higher hardness, YS and TS and lower elongation to fracture (EF) values compared to Al7Si-Mg alloy. In the milling tests, it was stated that the cutting force (CF), built-up layer (BUL) and builtup edge (BUE) reduced with the increment of the V, while it increased with the increment of the

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“…Magnesium (Mg) alloys are not only useful in aerospace and automotive industries due to their low density, high specific stiffness, good machinability, castability, good mechanical properties, and good strength-to-weight ratio [1][2][3][4][5], but they are also in orthopedic bone implantation as a biodegradable material to provide a temporary backing during the healing process [6]. These alloys possessed distinguishable biomedical features; slow degradation during the implantation without causing harmful effects and preventing the need for a further surgical operation to remove the implant, hence accelerating the healing process, leading to a reduction in cost implication, scarring, and risk [7].…”

Section: Introductionmentioning

confidence: 99%

“…These alloys possessed distinguishable biomedical features; slow degradation during the implantation without causing harmful effects and preventing the need for a further surgical operation to remove the implant, hence accelerating the healing process, leading to a reduction in cost implication, scarring, and risk [7]. These prosthetic implant materials are primarily designed to substitute or improve a part or function of the body in a way that is reliable, safe, and physiologically accepted [1][2][3][4][5][6][7][8]. They are noted to be efficacious in terms of osteoconductivity, biocompatibility, and excellent mechanical properties with Young's modulus (E = 41-45 GPa) close to that of bones (E = 3 -20 GPa) [9].…”

Section: Introductionmentioning

confidence: 99%

Electrophoretic Deposition of Nanohydroxyapatite on Homogenized Magnesium Based Alloy for Biomedical Applications

Sadiq,

Sudin,

Alsakkaf

et al. 2023

JBBBE

Self Cite

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Magnesium (Mg) alloys are promising biodegradable implant materials. If successful, they do not require second surgical operation for their removal. However, the focus of this study is to address the limitation of fast degradation rate (DR) which hinders the clinical application of Mg alloys. The bio-corrosion rate of any intermetallic alloy is related to its beta (β) phase volume fraction. Thus, homogenization heat treatment (HHT) was carried out to reduce the β phase. The influence of β phase and the hydroxyapatite powders (HAp) was employed to slow down the initial DR of Mg AZ91 alloy. Samples were cut from Mg grade AZ91 alloy ingot in 10mm x 10mm x 3mm dimension. The samples were prepared and divided into two; the first part was classified as as-received sample (sample a) while the second one was processed for HHT. HHT was carried out at 410°C/10h, cooled inside the furnace and named as homogenized sample (sample b). The HAp was synthesized using a simple wet chemical precipitation technique (SWCPT) and deposited on sample b via electrophoretic deposition (EPD) at different voltages with different deposition times. The HAp, uncoated and coated samples were characterized. Potentiodynamic polarization (PP) and immersion tests were carried out in stimulated body fluid (SBF) to estimate the DR and in vitro bioactivity of Mg AZ91 respectively. The results revealed a significant drop in DR from sample a (1.421 mm per year) to coated sample h (3.73 x 10-4 mm per year). Keywords: Magnesium alloy, biodegradable implants, beta phase, homogenization heat treatment, hydroxyapatite, electrophoretic deposition.

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Effect of different machining parameters on surface roughness of aluminium alloys based on Si and Mg content

Cited by 14 publications

References 17 publications

Influence of extrusion parameters on drilling machinability of AZ31 magnesium alloy

Influence of extrusion parameters on drilling machinability of AZ31 magnesium alloy

Comparison of Machinability Performances in Milling of Al-7Si-Mg and Al-7Si-0.6Mg Alloys

Electrophoretic Deposition of Nanohydroxyapatite on Homogenized Magnesium Based Alloy for Biomedical Applications

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