Caracterização microestrutural dos alumínios comerciais AA1100, AA1050 e AA1070 e do alumínio superpuro AA1199

Oliveira, Janaina da Costa Pereira Torres de; Padilha, Angelo Fernando

doi:10.1590/s0370-44672009000300017

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…Moreover, the electrical conductivity values for the high purity aluminum AA1199 (Table 2) and the AA1050 aluminum are higher than those measured for the AA4006 alloy. Therefore, it may be observed that the electrical conductivity decreases with the increase in the total quantity of solute, following the decreasing order: AA1199 > AA1050 DC ≈ AA1050 TRC > AA4006 DC ≈ AA4006 TRC (Oliveira and Padilha, 2009;Souza et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

“…Electrical conductivity measurements can be used for the evaluation of the concentration of solute atoms in the solid solution of aluminum alloys, since this property decreases with increase of the solute content in these alloys (Oliveira and Padilha, 2009). In this way, heat treatments, which alter the solute concentration in solid solution, strongly influence the electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Effect of casting mode and thermal treatments on the electrical conductivity of the AA4006 aluminum alloy

et al. 2017

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Initially studied was the effect of the casting mode on the electrical conductivity of AA4006 aluminum alloy sheets produced by both Twin Roll Casting (TRC) and by the semi-continuous Direct Chill (DC) industrial processes, when compared to sheets with commercial purity (AA1050) and high purity aluminum (AA1199). Then, the effects of heat treatments on the electrical conductivity of the AA4006 alloy sheets produced by TRC were also studied. Isochronous and isothermal heat treatments allowed to obtain the precipitation and solution kinetics of the intermetallic compounds. The precipitation kinetics was analyzed with the help of the Johnson-Mehl-Avrami-Kolmogorov equation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of casting mode and thermal treatments on the electrical conductivity of the AA4006 aluminum alloy

et al. 2017

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“…Since, the SS tool material shows good attraction between the metallic molecules attributing of smooth flow of current at machining zone. At the same time, AMC tool have lesser intermolecular metallic bonding among the molecules [21].Hence the uniform current flow in the IEG increases the MR in the SS tool than AMC tool. The SS tool produces around 71.6 % higher MR than AMC tool for the parameter combination of 8V, 85% and 23 g/l.…”

Section: Influences Of Machining Voltage On Oc and Mrmentioning

confidence: 96%

Performance study of electrochemical micromachining using square composite electrode for copper

T¹,

Perumal

Thanigaivelan³

2022

CI&CEQ

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The use of micro components is increasing day by day in the industries such as aviation, power circuit boards, inkjet nozzle and biomedical. Among various non-traditional micromachining methods, electrochemical micromachining (EMM) shows unique characteristics such as no tool wear, no residual stress and high accuracy. In this research EMM is considered to study the effect of square shaped stainless steel (SS) and aluminum metal matrix composite (AMC) tool on square hole generation. The significant process parameters such as machining voltage, duty cycle and aqueous sodium nitrate (NaNO3) electrolyte of varying concentration is considered for the study. The performances of EMM process are evaluated in terms of machining rate (MR) and Overcut (OC). The AMC tool shows 43.22 % lesser OC than the SS tool at the parameter combinations of 8V, 85% and 23 g/l. Also, for the same parameter combination MR for SS tool is 71.6 % higher than the AMC tool. Field emission scanning electron microscope image (FESEM) analysis shows that the micro square hole generated using composite electrode shows micro-pits on the circumference of the square hole. The energy dispersive X-ray spectroscopy (EDAX) analysis is conducted to verify presence and distributions of reinforcement in AMC tool.

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Microstructural, Mechanical, and Fracture Characterization of Metal Matrix Composite Manufactured by Accumulative Roll Bonding

Pereira

Silva

Requena

et al. 2021

J. of Materi Eng and Perform

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Accumulative roll bonding is a severe plastic forming process recently proposed to manufacture ceramic particle reinforced-multi-layered metal matrix composites. In this work, low-cost composite multi-layered laminate was produced by roll bonding commercially pure aluminium 1100 with 5% in volume of reinforcing micro-scale silicon carbide particles. Microstructural features, hardness, tensile properties in the presence of stress concentrators, and wear resistance were assessed.Fracture surface inspection was carried out to determine operating failure mechanisms.Hardness was significantly enhanced, whereas tensile properties only moderately improved by ceramic particles incorporation. The main reasons were limited recrystallization and work-hardening relief due to periodic annealing, not completely dispersed particulate phase, some particle agglomeration. Though tensile properties increments were not much attractive, exceptional increase in wear performance was achieved due to the addition of ceramic particulate phase, which acted as solid lubricant mitigating abrasion, adhesion, and delamination wear mechanisms. The use of the manufactured composite laminate could then be worthwhile in applications where lowcost, notch insensitivity, and superior wear resistance are design requirements.

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Caracterização microestrutural dos alumínios comerciais AA1100, AA1050 e AA1070 e do alumínio superpuro AA1199

Cited by 4 publications

References 1 publication

Effect of casting mode and thermal treatments on the electrical conductivity of the AA4006 aluminum alloy

Effect of casting mode and thermal treatments on the electrical conductivity of the AA4006 aluminum alloy

Performance study of electrochemical micromachining using square composite electrode for copper

Microstructural, Mechanical, and Fracture Characterization of Metal Matrix Composite Manufactured by Accumulative Roll Bonding

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