The Effect of Microstructures and Hardness Characteristics of Recycling Aluminium Chip AA6061/Al Powder On Various Sintering Temperatures

Kadir, Muhammad Irfan Ab; Mustapa, Mohammad Sukri; Rosli, Nurul Liyana; Yahya, Mohd Shahir; Mohamad, Mahathir bin; Rahim, Abd Khalil Abd

doi:10.30880/ijie.2018.10.03.009

Cited by 9 publications

(8 citation statements)

References 4 publications

(5 reference statements)

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“…Clearly, tensile strength, yield strength and elongation measured from the used steel tube at 0°, 90°, 180° and 270° were lower than those from the unused steel tube. Usually, tensile and yield strength are two essential properties that can be used to characterize the strength of material [21][22], while elongation is used to indicate the ductility [23][24]. Hence, the steel tube exposed to the high temperature environment of the boiler was subjected to the degradation in the strength and its ductility.…”

Section: Microstructure Examinationmentioning

confidence: 99%

Study of Microstructure and Mechanical Property Degradation of SA210 A1 Boiler Tube

Peeratatsuwan

Chowwanonthapunya

2020

IJIE

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The comprehension of the microstructure change and mechanical property degradation are of particular importance for assessing the integrity of aging boiler tubes. This paper describes the investigation of microstructure evolution and mechanical property degradation of SA210 A1 steel used in an actual boiler condition. The investigation deals with visual inspection, chemical composition analysis, micrograph study using Energy Dispersive Spectroscopy-Scanning Electron Microscopy (EDS-SEM), tensile test and hardness test. The result showed that the prolonged operating period in the high temperature condition resulted in the reduction of the mechanical properties of the SA 210 A1 steel tube. The study also indicated the presence of the onset of the pearlite disintegration and coagulation, resulted from the microstructure degradation of the aged steel tube after the elevated temperature service in a boiler. It is advisable that the microstructure technique, i.e. metallurgical replica, should be added to the common on-site inspection to increase the effectiveness of the maintenance and maintain the availability of the steam generating units.

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Section: Microstructure Examinationmentioning

confidence: 99%

Study of Microstructure and Mechanical Property Degradation of SA210 A1 Boiler Tube

Peeratatsuwan

Chowwanonthapunya

2020

IJIE

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“…There were many attempts by automotive manufacturers to reduce their vehicle weight by using AA5xxx and AA6xxx aluminum alloys as their vehicle components part. AA6xxx which was age hardened material are normally formed either in its T4 condition (solution heat treated and quenched), followed by artificial ageing for higher strength, or in its T6 condition (solution heat treated, quenched and artificially aged) [7], [8]. The material is first heated to its Solution Heat Treatment (SHT) temperature and held for a sufficient period of time.…”

Section: Traditional Cold Formingmentioning

confidence: 99%

Reviews on the Forming Process of Heat Treatable Aluminium Alloys

Yahaya

Lai

et al. 2018

IJIE

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Available forming process applied for heat treatable aluminium alloy were reviewed and presented in this paper. The reviews emphasized on the heat treatment, application and contribution of the forming methods. Forming methods discussed includes traditional, warm forming, hydroforming, superplastic forming, hot forming with in-die quench (HFQ) and hot press forming (HPF). The effects of forming processes towards heat treatable aluminium alloy were presented through the understanding on each process strengthening phenomena and the heat treating phenomena. These were to ensure better understanding on heat treatable aluminium alloy composition changes throughout forming process. Finally, concluding remarks the underline challenges of forming heattreatable aluminium alloy and subsequently highlights the potential work that can be applied in order to ensure a more efficient and sustainable manufacturing agenda for heat treatable aluminium alloy.

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“…Previously, researchers or mould makers were preferred to use circular cooling channels due to limitations of the drilling process. Nevertheless, other cooling channel's cross section profile such square shape also implemented in their study [2], [6][7][8]. Thus, the circular and square shape cooling channels resulted good performance of the cooling system depend on layout and the geometry of the cooling channel itself.…”

Section: Design For Cross Section Of Cooling Channelsmentioning

confidence: 99%

The Thermal Effect of Variate Cross-Sectional Profile on Conformal Cooling Channels in Plastic Injection Moulding

Wahab

Raus²,

Amir³

et al. 2018

IJIE

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Cooling system is an important role in designing a productive plastic injection moulding (PIM). The selection of geometry and layout for plastic injection moulding cooling channels strongly influences the cooling performance such as cooling time and thermal distribution that leads to shrinkage and warpage. This paper presents the study to determine the best cooling channel layout and cross-sectional profile which include circular straight drilled cooling channels, circular conformal cooling channels, square shape conformal cooling channels, elliptical conformal cooling channels and diamond conformal cooling channels. The cooling time and thermal distribution were simulated by Moldflow Insight (MFI) software. Results are presented based on ejection time and temperature variation by using transient analysis in MFI. The results found the best cross-sectional of cooling channels indicated by square shape conformal cooling channels, compare to others due to the shortest cooling time that recorded from simulation. The conformal cooling channel layout also resulted greater thermal distribution compared to straight drilled cooling channel design.

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The Effect of Microstructures and Hardness Characteristics of Recycling Aluminium Chip AA6061/Al Powder On Various Sintering Temperatures

Cited by 9 publications

References 4 publications

Study of Microstructure and Mechanical Property Degradation of SA210 A1 Boiler Tube

Study of Microstructure and Mechanical Property Degradation of SA210 A1 Boiler Tube

Reviews on the Forming Process of Heat Treatable Aluminium Alloys

The Thermal Effect of Variate Cross-Sectional Profile on Conformal Cooling Channels in Plastic Injection Moulding

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