Effect of microstructure and precipitation phenomena on the mechanical behavior of AA6061-T6 aluminum alloy weld

Hakem, Maamar; Lebaili, S.; Mathieu, Sandrine; Miroud, Djamel; Lebaili, Abdelatif; Cheniti, Billel

doi:10.1007/s00170-019-03401-1

Cited by 41 publications

(9 citation statements)

References 37 publications

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“…As can be seen, the Al and G powders were distributed uniformly inside the specimens made with recipes 6, 4, and 2. This result indicates that no any agglomeration [ 37 ] and precipitation [ 38 ] of the Al and G powders inside the specimens were found.…”

Section: Resultsmentioning

confidence: 91%

Improving Cooling Performance of Injection Molding Tool with Conformal Cooling Channel by Adding Hybrid Fillers

Kuo

2021

Polymers

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Silicone rubber mold (SRM) is capable of reducing the cost and time in a new product development phase and has many applications for the pilot runs. Unfortunately, the SRM after injection molding has a poor cooling efficiency due to its low thermal conductivity. To improve the cooling efficiency, the thermal conductivity of the SRM was improved by adding fillers into the SRM. An optimal recipe for fabricating a high cooling efficiency low-pressure injection mold with conformal cooling channel fabricated by fused deposition modeling technology was proposed and implemented. This study proposes a recipe combining 52.6 wt.% aluminum powder, 5.3 wt.% graphite powder, and 42.1 wt.% liquid silicon rubber can be used to make SRM with excellent cooling efficiency. The price–performance ratio of this SRM made by the proposed recipe is around 55. The thermal conductivity of the SRM made by the proposed recipe can be increased by up to 77.6% compared with convention SRM. In addition, the actual cooling time of the injection molded product can be shortened up to 69.1% compared with the conventional SRM. The actual cooling time obtained by the experiment is in good agreement with the simulation results with the relative error rate about 20%.

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Section: Resultsmentioning

confidence: 91%

Improving Cooling Performance of Injection Molding Tool with Conformal Cooling Channel by Adding Hybrid Fillers

Kuo

2021

Polymers

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“…The sequence of phase transformation in 6xxx alloys is also denoted by the change in morphology and size of the grains in the aluminum matrix because of changes in temperature [38]. The phenomenon of phase transformation is related to input heat, which in turn is strongly dependent from both: weld speed and welding current [39]. In this investigation, M2-T4-4043 was the sample with the best performance in tensile strength reaching up to 153 MPa in maximum stress while the worst case was the sample M7-T6-4043 with 64 MPa.…”

Section: Discussionmentioning

confidence: 99%

Comparative in Mechanical Behavior of 6061 Aluminum Alloy Welded by Pulsed GMAW with Different Filler Metals and Heat Treatments

Guzman

Granda‐Gutiérrez

Acevedo³

et al. 2019

Materials

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Precipitation hardening aluminum alloys are used in many industries due to their excellent mechanical properties, including good weldability. During a welding process, the tensile strength of the joint is critical to appropriately exploit the original properties of the material. The welding processes are still under study, and gas metal arc welding (GMAW) in pulsed metal-transfer configuration is one of the best choices to join these alloys. In this study, the welding of 6061 aluminum alloy by pulsed GMAW was performed under two heat treatment conditions and by using two filler metals, namely: ER 4043 (AlSi 5 ) and ER 4553 (AlMg 5 Cr). A solubilization heat treatment T4 was used to dissolve the precipitates of β"phase into the aluminum matrix from the original T6 heat treatment, leading in the formation of β-phase precipitates instead, which contributes to higher mechanical resistance. As a result, the T4 heat treatment improves the quality of the weld joint and increases the tensile strength in comparison to the T6 condition. The filler metal also plays an important role, and our results indicate that the use of ER 4043 produces stronger joints than ER 4553, but only under specific processing conditions, which include a moderate heat net flux. The latter is explained because Mg, Si and Cu are reported as precursors of the production of β"phase due to heat input from the welding process and the redistribution of both: β" and β precipitates, causes a ductile intergranular fracture near the heat affected zone of the weld joint.

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“…Penggunaan aluminium jenis 5083 dalam bidang industri adalah untuk konstruksi kapal [1]. Aplikasi lain Aluminium 5083 adalah untuk tangki transportasi dan penyimpanan LNG [2]. Di antara jenis paduan aluminium yang ada, aluminium 5083 merupakan aluminium yang mempunyai sifat yang baik apabila dilakukan pengelasan.…”

Section: Pendahuluanunclassified

Pengaruh variasi kampuh las tumpul terhadap ketangguhan impak dan kekerasan hasil pengelasan metal inert gas pada aluminium 5083

Burhanuddin

Purba

Tarkono

2023

JTMI

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Pemilihan sambungan las yang kurang baik merupakan salah satu penyebab kerusakan atau patahan pada pengelasan. Sambungan tumpul (Butt Joint) merupakan salah satu jenis sambungan las yang memiliki banyak keunggulan dibandingkan dengan jenis lainnya. Karena selama proses pengelasan, area sambungan akan terisi penuh dengan logam pengisi. Selain itu, proses pembuatan sambungan tumpul mudah, sehingga banyak digunakan dalam dunia industri. Dalam proses pengelasan, input panas dan kebersihan permukaan sambungan harus diperhatikan agar tidak menyebabkan kegagalan sambungan las. Untuk mengetahui nilai ketangguhan dan kekerasan, benda uji yang telah dilas, diuji dengan uji impak dan uji kekerasan. Kajian ini bertujuan untuk mengetahui pengaruh butt welding joint tipe V, single V, dan double V terhadap ketangguhan impak dan kekerasan benda uji aluminium 5083 hasil las MIG. Hasil kajian menunjukkan bahwa nilai kekerasan tertinggi ditunjukkan oleh butt joint single V dengan nilai 34,0 HRB dan nilai kekerasan terendah ditunjukkan oleh butt joint double V dengan nilai 27,0 HRB. Pada uji tumbukan, nilai tumbukan tertinggi ditunjukkan oleh sambungan V tunggal dengan nilai 0,0756 Joule/ dan nilai tumbukan terendah ditunjukkan oleh sambungan tumpul V ganda dengan nilai 0,0145 Joule/ .

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Effect of microstructure and precipitation phenomena on the mechanical behavior of AA6061-T6 aluminum alloy weld

Cited by 41 publications

References 37 publications

Improving Cooling Performance of Injection Molding Tool with Conformal Cooling Channel by Adding Hybrid Fillers

Improving Cooling Performance of Injection Molding Tool with Conformal Cooling Channel by Adding Hybrid Fillers

Comparative in Mechanical Behavior of 6061 Aluminum Alloy Welded by Pulsed GMAW with Different Filler Metals and Heat Treatments

Pengaruh variasi kampuh las tumpul terhadap ketangguhan impak dan kekerasan hasil pengelasan metal inert gas pada aluminium 5083

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