Microstructural and Electrochemical behaviour of Aluminium Alloy Composites Produced Using Different Sintering Techniques

Muthuchamy, A.; Annamalai, A. Raja; Acharyya, Swati Ghosh; Nagaraju, Nidhi; Agrawal, Dinesh Kumar

doi:10.1590/1980-5373-mr-2017-0321

Cited by 10 publications

(6 citation statements)

References 33 publications

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“…Telah banyak penelitian tentang pengujian material radiator [8,9,10], yang menarik [8] melakukan penelitian pada material radiator, bahwa penambahan tembaga pada aluminum akan meningkatkan kekerasan material. Hal ini menunjukkan bahwa setiap radiator memiliki spesifikasinya masing-masing dan mempengaruhi kualitas radiator.…”

Section: Pendahuluanunclassified

Studi Perbandingan tentang Sifat Mekanik dan Struktur Mikro Material Radiator Impor dan Material Radiator Lokal

Rahmad

Sudjadi

2021

JMPM

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Pengujian pada studi ini menggunakan sampel core radiator impor dan core radiator lokal. Metode pengujian dilakukan dengan tiga tahapan yaitu sebelum heat treatment, sesudah heat treatment, dan uji korosi dengan direndam cairan yang berbeda yaitu H2SO4, NAOH, dan cairan radiator selama 15 hari. Sebelum heat treatment, dilakukan uji komposisi kimia semua sampel radiator dengan alat XRF, uji struktur mikro dengan mikroskop optik pembesaran 500x, dan uji kekerasan micro-vickers dengan beban 100gf dalam waktu 10 detik. Heat treatment dilakukan dengan suhu 850oc dalam waktu 3 jam, kemudian direndam dengan cairan kimia selama 15 hari. Dari pengujian tersebut didapat hasil uji struktur mikro baik sebelum maupun sesudah heat treatment pada kedua sampel radiator tidak terlihat kumpulan atom, matrix dan batas butirnya. Uji kekerasan pada sampel core radiator Mercedez sebelum dipanaskan sebesar 43,4 HV dan 39,2 HV sesudah heat treatment. Pada core radiator lokal, sebelum dipanaskan sebesar43,5 HV dan 38,2 HV sesudah dipanaskan. Hasil uji komposisi kimia menunjukan pada sampel core Mercedez didominasi unsur Ca, Mn, dan Fe dan pada sampel core radiator lokal didominasi unsur Ca, Cu dan Zn. Hasil pengamatan dan analisa setelah direndam cairan H2S04, NAOH, dan cairan radiator pada kedua sampel menunjukkan terjadinya perubahan warna karena adanya perubahan unsur akibat peningkatan konsentrasi atom.

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Section: Pendahuluanunclassified

Studi Perbandingan tentang Sifat Mekanik dan Struktur Mikro Material Radiator Impor dan Material Radiator Lokal

Rahmad

Sudjadi

2021

JMPM

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“…The addition of aluminum in Ni-Ti alloy researched by Pavel Salvetr et al showed the decrease of porosity and improvement of corrosion resistance and hardness [33]. Aluminum (Al) addition is due to its distinctive characteristics, such as low density (2.7 g/cm 3 ) and combination of moderate strength and high ductility, thermal conductivity, electric conductivity, corrosion-resistance [34,35].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Titanium Alloy Obtained by Powder Metallurgy

et al. 2022

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Ti-based alloys are an important class of materials suitable especially for medical applications, but they are also used in the industrial sector. Due to their low tribological properties it is necessary to find optimal technologies and alloying elements in order to develop new alloys with improved properties. In this paper, a study on the influence of sintering treatments on the final properties of a titanium alloy is presented. The alloy of interest was obtained using the powders in following weight ratio: 80% wt Ti, 8% wt Mn, 3% wt Sn, 6% wt Aluminix123, 2% wt Zr and 1% wt graphite. Two sintering methods were used, namely two-step sintering (TSS) and multiple-step sintering (MSS), as alternatives to conventional sintering which uses a single sintering dwell time. Evolution of sample morphology, composition and crystalline structure with sintering method was evidenced. The lower values for the friction coefficient and for the wear rate was attained in the case of the sample obtained by TSS.

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“…Aluminum is one of the most commonly used metals in modern industry [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Aluminum alloys with a high magnesium content are very popular multifunctional alloys, and are used in the automotive industry, shipbuilding, aerospace engineering and the packaging industry [ 13 , 14 , 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Alloying Elements Effect on the Recrystallization Process in Magnesium-Rich Aluminum Alloy

et al. 2022

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This paper addresses the study of the complex effect of alloying elements (magnesium, manganese, copper and zirconium) on changes in magnesium-rich aluminum alloy composition, fine and coarse particle size and number, recrystallization characteristics and mechanical properties. The data obtained made it possible to analyze change in the chemical composition, sizes of intermetallic compounds and dispersoids depending on alloying elements content. The effect of the chemical composition on the driving force and the number of recrystallization nuclei was studied. It was established that the addition of alloying elements leads to grain refinement, including through the activation of a particle-stimulated nucleation mechanism. As a result, with Mg increase from 4 to 5%, addition of 0.5% Mn and 0.5% Cu, the grain size decreased from 72 to 15 µm. Grain refinement occurred due to an increase in the number of particle-stimulated nuclei, the number of which at minimal alloying rose from 3.47 × 1011 to 81.2 × 1011 with the maximum concentration of Mg, Mn, Cu additives. The retarding force of recrystallization, which in the original alloy was 1.57 × 10−3 N/m2, increased to 5.49 × 10−3 N/m2 at maximum alloying. The influence of copper was especially noticeable, the introduction of 0.5% increasing the retarding force of recrystallization by 2.39 × 10−3 N/m2. This is due to the fact that copper has the most significant effect on the size and number of intermetallic particles. It was established that strength increase without ductility change occurs when magnesium, manganese and copper content increases.

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Microstructural and Electrochemical behaviour of Aluminium Alloy Composites Produced Using Different Sintering Techniques

Cited by 10 publications

References 33 publications

Studi Perbandingan tentang Sifat Mekanik dan Struktur Mikro Material Radiator Impor dan Material Radiator Lokal

Studi Perbandingan tentang Sifat Mekanik dan Struktur Mikro Material Radiator Impor dan Material Radiator Lokal

Characterization of Titanium Alloy Obtained by Powder Metallurgy

Alloying Elements Effect on the Recrystallization Process in Magnesium-Rich Aluminum Alloy

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