Effect of double thermal ageing treatment on the mechanical properties of Al–Cu–Mg/3% rice husk ash composite

Umaru, O. B.; Abdulwahab, M.; Tokan, Aje; Bello, Abdulhakeem; Umar, Hussaini Abdullahi

doi:10.1016/j.rinp.2016.06.009

Cited by 6 publications

(4 citation statements)

References 3 publications

(5 reference statements)

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“…Compared with the two tensile test results, the tensile strength value at double-stage aging is lower because of the over-aging process. This condition also happened in Umaru's research [13], which showed that the treatment of doubleaging at higher temperatures or longer time would result in over aging. In the single-stage aging treatment, uniformity of the microconstituents and the intermetallic phase experienced dispersion and regrowth so that some constituents were able to increase tensile strength [14].…”

Section: Tensile Strength Testing Analysismentioning

confidence: 65%

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Mechanical Properties Enhancement of Al-Si-Cu-Fe Alloy Through Aging Treatment Variations

Muttahar

Virdhian

Putra

et al. 2020

metal.

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Al-Si alloys are being widely used as main engine components replacing iron in several parts in the automotive industry. Some of its mechanical properties were a reference in its alloy utilization. In this research, the heat treatment carried out on the specimen included solid solution treatment and the artificial aging process for aluminium alloys. Test pieces were heated on the furnace with a solid solution treatment process at 540 ° C with holding time around 5 hours and quenched at 60 °C with water quenchant, followed by 3 different aging treatment which included single-stage aging, artificial aging with pre-aged, and double stage aging. Tests carried out by hardness test, tensile strength test, impact test, metallographic and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) observations. The results of this research showed the differences in phase constituent and morphology microconstituents due to variations of aging. The difference of each treatment could be seen in the morphology of the precipitate that is dispersed, rounded and needle-like shaped, this phase can influence the mechanical properties of Al-Si-Cu alloys. The results of mechanical testing show the highest hardness was obtained by double stage aging treatment 161.27 HRB. The highest tensile strength occurs in specimens with a single-stage aging treatment of 202.56 MPa. The highest impact resistance occurred in samples with the pre-aging treatment of 18.6 J.

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Section: Tensile Strength Testing Analysismentioning

confidence: 65%

“…The result shows because precipitate dispersion has formed earlier so that the distribution can grow into finer phases at higher temperatures. Since the AlSiZn phase appears on the matrix, it contributes to increasing the hardness of the alloy [13].…”

Section: Hardness Testing Analysismentioning

confidence: 99%

Mechanical Properties Enhancement of Al-Si-Cu-Fe Alloy Through Aging Treatment Variations

Muttahar

Virdhian

Putra

et al. 2020

metal.

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“…Induction system could be using different processes like; forging [12], heat treatment [13], welding [14][15][16] or casting. Among the aluminum alloys, the copper [17,18] component is the component that has the highest level of 2000 series [19,20] alloys, and this increases the hardness and resistance of the alloy. As the most significant factor for increasing the mechanical characteristics of aluminum alloys [21] by optimizing them, T6 heat treatment [22,23] comprises of the solution treated and artificial ageing processes.…”

Section: Introductionmentioning

confidence: 99%

Cost analysis of T6 induction heat treatment for the aluminum-copper powder metal compacts

Taştan

Gökozan

Çavdar³

et al. 2020

SCI SINTER

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This work compares an energy cost and an energy consumption results of the 4 wt.% cupper mixed aluminum based powder metal (PM) compacts processing under induction or furnace heating. Total power and energy consumptions and total energy costs per kilogram and compact have been analyzed. T6 precipitation heat treatment applications have been applied with two different methods, one with 2.8 kW, 900 kHz ultra-high frequency induction heating system (UHFIHS), other with 2 kW chamber furnace. In the first method, Al-Cu PM compacts have been heated by induction at 580 °C in one minute and then cooled down by water. Afterwards, the samples have been heated 170, 180, 190 and 200 °C respectively for artificial ageing and cooled naturally. In the second treatment, unlike the first study, Al-Cu PM compacts are heated by chamber furnace at 540 °C in 5 hours and cooled by water. Then PM compacts are artificially aged at 190 °C in 10 hours with same furnace. During both processes, energy and power consumptions for each defined process have been measured. Optimum heat treatment of the induction is determined. The cheaper energy cost is obtained by the induction heat treatment.

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“…Moreover, the alloying elements, such as silicon, exhibited unique structural arrangement that elevated the mechanical behavior reached by precipitation development occurred after thermal treatment [18]. The precipitation in these alloys indicates a several transformation sequences from the supersaturated solid solution that relies on the fine precipitation, which strained the crystallographic planes of the Al-matrix and improving the specific Young's modulus, high specific strength, yield and creep strengths [19][20][21][22]. The silicon and iron microalloying can refine microstructure of AlMg alloys due to the formation of Mg 2 Si and Al 2 MgC 2 phases during the solidification process [23,24].…”

Section: Introductionmentioning

confidence: 99%

Solidification Physics and Microstructure: A Study of AlMg and AlMgSi Alloys by Vortex Method

Rodríguez¹,

Martı́nez²,

Canul³

2018

Solidification

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Physical properties on solidification process deal with the internal atomic arrangement, named generally microstructure. The microstructure characteristic is essential for the properties of metallic materials, including binary, ternary or eutectic alloys. Thus, despite significant progress on microstructural evolution, numerous challenges still exist for revealing the internal structure to act synergistically with matrix alloy chemical components. It is well known that the internal microstructure of an alloy controls and modifies the nature, interaction type and properties of the existing defects and final applications.At this point, necessary understanding of the correlation between equilibrium and nonequilibrium effects, surface energy and chemical potential for the time of the structures formation is probably the key to solidification that can help to predict the complex of microstructures. For the case of multi-phase solidification, AlMgSi alloy involves thousands of atoms, at the atomic scale, that transit to microstructures while the solid-liquid phase transformation occurs. This chapter outlines the role of solidification physics, and the atomic arrangement is believed to have in influencing mechanical hardness properties and degradation resistance.

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Effect of double thermal ageing treatment on the mechanical properties of Al–Cu–Mg/3% rice husk ash composite

Cited by 6 publications

References 3 publications

Mechanical Properties Enhancement of Al-Si-Cu-Fe Alloy Through Aging Treatment Variations

Mechanical Properties Enhancement of Al-Si-Cu-Fe Alloy Through Aging Treatment Variations

Cost analysis of T6 induction heat treatment for the aluminum-copper powder metal compacts

Solidification Physics and Microstructure: A Study of AlMg and AlMgSi Alloys by Vortex Method

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