Microhardness and Microstructure of Hot Extrusion Parameters in Direct Recycling of Aluminium Chip (AA 6061) by ANOVA Method

Rady, Mohammed H.; Mustapa, Mohammad Sukri; Shamsudin, Shazarel; Lajis, Mohd Amri; Wagiman, Abdullah

doi:10.1088/1742-6596/1150/1/012069

Cited by 7 publications

(4 citation statements)

References 5 publications

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“…Recycling aluminium via solid-state technique can be performed using various types of severe deformation processes. To this date, the deformation process such as forging [7][8][9], rolling [10,11] and extrusion [12][13][14] have been applied in previous research works. It has been claimed in a majority of research studies that the method is feasible in transforming recycled chips into semi-finished products.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermally Formed Alumina on Density of AlMgSi Alloys Extrudate Recycled Via Solid State Technique

Wagiman

Mustapa

Lajis

et al. 2021

ARFMTS

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Solid state recycling of aluminium via hot extrusion is a sustainable technique. The process performed before hot extrusion plays a vital role on the extrudate properties. In this study, the effect of naturally and thermally formed in-situ alumina on the extrudate density were investigated. Fours type of material identified as a solid as-received, non-treated recycle chip, 300 0C thermally treated recycle chip and 500 0C thermally treated recycle chip were prepared for the experiment. Prior to extrusion, the recycle chips were compacted into a chip-based billet, preheated and immediately extruded into a semi-finished product. The density test performed on the chip-based extrudate found that the type of chips influenced the density. The chip-based extrudate made of 300 0C and 500 0C thermally treated chips resulted in higher density than solid as-received and non-treated chips. Chip-based extrudate produced from 500 0C thermally treated chips resulted in density of 2724 kg/m3, which is the highest among the specimen. This density value was 0.7 % higher compared to the solid as-received extrudate. Microstructure examination on the cross-section revealed the alumina entrapped in the chip-based extrudate. The alumina entrapped in 500 0C thermally treated chips specimen was more prone than the non-treated and 300 0C thermally-treated chips. This finding explains the variation in the extrudate density.

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Section: Introductionmentioning

confidence: 99%

Effect of Thermally Formed Alumina on Density of AlMgSi Alloys Extrudate Recycled Via Solid State Technique

Wagiman

Mustapa

Lajis

et al. 2021

ARFMTS

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“…About 90% of the produced secondary aluminum is used in the automotive industry as casting alloys, and the rest is wrought aluminum alloys, from which products are obtained by metal forming [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. The main method used to obtain billets for subsequent deformation is chip briquetting [13,16,18,20,21,23,24,29].…”

Section: Introductionmentioning

confidence: 99%

Research of Technology For Production Deformed Semi-Finished Products From Chip Waste of Aluminum Alloys And Study Properties of The Obtained Products

Sidelnikov

Zagirov

Loginov

et al. 2021

Preprint

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The results of studies of some methods of obtaining longish deformed semi-finished products in the form of rods and wires from chips of aluminum alloys 6063 and AlSi12 excluding the melting process during their implementation are presented. At the same time, the main methods used powder metallurgy (briquetting), metal forming (extrusion and drawing), and heat treatment (annealing). Using the developed general technological scheme of thermal deformation processing of chip waste from aluminum alloys, experimental studies of the technology of production of longish deformed semi-finished products from high-quality chips of alloys 6063 and AlSi12 have been carried out. The mechanical properties of metal obtained from shavings of experimental alloys of briquettes, rods, and wires were determined. The change in the structure of semi-finished products at all technological stages of processing was investigated. Computer simulation has been carried out, according to the results of which the regularities of temperature change, degree of deformation, and relative density in the volume of the deformation zone for semi-finished products obtained by the method of combined rolling-extrusion of a porous billet from briquette chips of 6063 alloy. As well as the degree of deformation, average normal and tangential stresses in the zone have been established. Deformation depends on the conditions of contact friction when drawing a wire from this alloy. Using the results of computer simulation, the proposed routes for drawing wire from extruded rods of chips of 6063 and AlSi12 alloys were experimentally tested and with their help, experimental batches of products were obtained for various industrial purposes.

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“…Products by solid-state recycling of aluminum chips in hot extrusion process are achieved by many parameters such as die design, extrusion ratio, extrusion speed, temperature related parameters and etc. in which each of them could influence the quality of extrudates [7][8][9]. This study investigates the effects of preheating temperature and preheating time on the response variables (tensile strength) and analysis of SEM fracture fractography of tensile specimens.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hot Extrusion Parameters on Tensile Strength and Fracture Behavior in Direct Recycling of Aluminium Alloy (6061) Chips

Rady

Mustapa

Shamsudin

et al. 2020

MSF

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Produced Profiles by direct recycling of aluminum chips in hot extrusion process were achieved by temperature related parameters using preheating temperature 450 °C, 500 °C, and 550 °C for duration 1 hour, 2 hours, and 3 hours preheating time. By using Design of Experiments (DOE) procedure with full factorial design and three center points analysis, the results showed that the preheating temperature factor is more important to be controlled rather than the preheating duration and increase of temperature conducted to the high tensile strength. The profiles extruded at 550 °C and 3 hours’ duration had obtained the optimum condition to get the maximum tensile strength. The influence of parameters of hot extrusion process on fracture surfaces of the recycled samples was also investigated and discussed.

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Microhardness and Microstructure of Hot Extrusion Parameters in Direct Recycling of Aluminium Chip (AA 6061) by ANOVA Method

Cited by 7 publications

References 5 publications

Effect of Thermally Formed Alumina on Density of AlMgSi Alloys Extrudate Recycled Via Solid State Technique

Effect of Thermally Formed Alumina on Density of AlMgSi Alloys Extrudate Recycled Via Solid State Technique

Research of Technology For Production Deformed Semi-Finished Products From Chip Waste of Aluminum Alloys And Study Properties of The Obtained Products

Effect of Hot Extrusion Parameters on Tensile Strength and Fracture Behavior in Direct Recycling of Aluminium Alloy (6061) Chips

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