Microstructural Analysis and Mechanical Properties of Direct Recycling Aluminium Chips AA6061/Al Powder Fabricated by Uniaxial Cold Compaction Technique

Kadir, Muhammad Irfan Ab; Mustapa, Mohammad Sukri; Latif, Noradila Abdul; Mahdi, Ahmed Sahib

doi:10.1016/j.proeng.2017.04.141

Cited by 32 publications

(19 citation statements)

References 7 publications

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“…Then, ultrasonic bath apparatus, FRITSCH -ultrasonic cleaner Labarette 17 was used to clean the milled Aluminium chip with duration of 1 hour using an acetone solution to remove oil, grease and any impurities. Lastly, the milled Aluminium chip is drying using drying oven at 75°C temperature in 1 hour to remove the remaining acetone solution from the Aluminium chip [12][13][14][15][16].…”

Section: Preparation Of Chips Aa7075mentioning

confidence: 99%

Effect of Burning Temperature on Rice Husk Silica as Reinforcement of Recycled Aluminium Chip AA7075

Joharudin¹,

Latif²,

Mustapa³

et al. 2020

ARFMTS

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Aluminium recycling is now a well-known technique used in material manufacturing because it consumes less energy and is environmentally friendly. This paper presents the effect of burning temperature on rice husk silica as reinforcement of recycled Aluminium chip AA7075 on physical properties and hardness. Rice husk silica was prepared without any chemical treatments which are original rice husk (O), rice husk ash burned at 700°C (RHA) and calcination of rice husk ash burned at 1000°C (CRHA). Recycled Aluminium chip AA7075 reinforced with rice husk silica i.e., 2.5 wt.%, 5 wt.%, 7.5 wt.%, 10 wt.% and 12.5 wt.% were prepared. Analyses of silica were conducted by using x-ray diffraction (XRD) and x-ray fluorescence (XRF) test. Silica remains to be in amorphous phases for original rice husk and rice husk ash at 700°C. However, at a burning temperature of 1000°C, silica was observed in semi crystalline phase. Porosity and water absorption of composite of metal matrix increased with an increasing the composition of rice husk silica. The hardness of composite of metal matrix improved with increasing rice husk silica, while the hardness of chip AA7075/O and chip AA7075/CRHA decreased with increasing rice husk silica. Based on investigation to Aluminium reinforced rice husk at different burning temperatures, amorphous phase of silica burned at 700°C shows good potential to improve the hardness of material by appropriate composition of rice husk silica.

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Section: Preparation Of Chips Aa7075mentioning

confidence: 99%

Effect of Burning Temperature on Rice Husk Silica as Reinforcement of Recycled Aluminium Chip AA7075

Joharudin¹,

Latif²,

Mustapa³

et al. 2020

ARFMTS

Self Cite

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“…The duration of the cleaning taken was 1 hour for each batch using an acetone solution (CH 3 COCH 3 ) to remove oil, grease and any impurities. Finally, the drying process was done by using drying oven within 1 hour at 75 8C to remove the residual acetone from the chip [16][17][18][19].…”

Section: Preparation Of Chips Aa7075mentioning

confidence: 99%

Effect of amorphous silica by rice husk ash on physical properties and microstructures of recycled aluminium chip AA7075

Joharudin

Latif

Mustapa

et al. 2019

Materialwissenschaft Werkst

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High strength to weight ratio of aluminium reinforced as metal matrix composites is a well known material used in automotive application. The effects of recycled aluminium chips AA7075 with amorphous silica by rice husk ash on the physical properties and microstructure were investigated. Recycled aluminium chip AA7075 was reinforced with agro waste of amorphous silica rice husk ash i. e., 2.5 %, 5 %, 7.5 %, 10 % and 12.5 %. Samples of these metal matrix composites were prepared by cold compaction method due to the lower energies consumption and operating cost compared to conventional recycling by casting. Physical testing of density, apparent porosity, water absorption and hardness tests of the metal matrix composites samples were examined in the current study. The density of metal matrix composites was increased up to 5 % of amorphous silica, and then decreased with increasing mass fraction of amorphous silica. Porosity and water absorption of metal matrix composites were significantly consistent at increasing mass fraction of amorphous silica, while the hardness of metal matrix composites was increased at increasing amorphous silica. Consequently, the microstructures of metal matrix composites were observed via optical microscope to analyze the dispersion of the reinforced composites. The microstructures of metal matrix composites were found non‐homogeneous and random distribution of amorphous silica and aluminium chip AA7075 compared to 100 % recycled aluminium chip AA7075. Based on investigation to aluminium reinforced rice husk ash composites, it has good potential to improve the material behavior of metal matrix composites by appropriate composition amorphous silica to composite.

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“…In recent years, there has been a lot of research work on the recycling of aluminum alloy chips using modern and innovative techniques without the liquid phase [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

“…An innovative method was presented by M. E. Mehtedi [ 20 ], in which he combined co-extrusion with friction mixing, ensuring a high-quality outer surface, while inside there were various sizes of porosity. On the other hand, sintering was used for the recycling of AA6061 aluminum chips where by applying pressure the aluminum chips are combined with a binder such as zinc stearate C 36 H 70 O 4 Zn [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Microstructure and Mechanical Properties of AlSi11 after Chip Recycling, Co-Extrusion, and Arc Welding

et al. 2021

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Recycling of raw materials and is crucial for the production of new products for the global economy. The aim here is, on the one hand, to reduce energy consumption, and, on the other hand, to obtain materials with similar functional properties. The study undertook research on the possibility of processing AlSi11 aluminum chips by compaction and co-extruding to obtain a product in the form of a flat bar with mechanical properties not lower than those of the cast materials. The performed tests and the developed technique allowed to obtain flat bars with more favorable mechanical properties (Yield Strength YS ≥ 155 MPa; Ultimate Tensile Strength UTS ≥ 212 MPa) than the castings (YS ≥ 70 MPa ≥ 150 MPa). The weldability evaluation tests revealed that the material is susceptible to porosity. The presence of pores, which reduces the cross-section (up to 60%), reduces the tensile strength (up to 20 MPa). The typical joint structure and plasticity is obtained, which indicate the possibility of tensile strength improvement.

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Microstructural Analysis and Mechanical Properties of Direct Recycling Aluminium Chips AA6061/Al Powder Fabricated by Uniaxial Cold Compaction Technique

Cited by 32 publications

References 7 publications

Effect of Burning Temperature on Rice Husk Silica as Reinforcement of Recycled Aluminium Chip AA7075

Effect of Burning Temperature on Rice Husk Silica as Reinforcement of Recycled Aluminium Chip AA7075

Effect of amorphous silica by rice husk ash on physical properties and microstructures of recycled aluminium chip AA7075

Analysis of Microstructure and Mechanical Properties of AlSi11 after Chip Recycling, Co-Extrusion, and Arc Welding

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