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Journals / Ordu Üniversitesi Bilim ve Teknoloji Dergisi / 2024 / Cilt: 14 Sayı: 2

Investigation of the Mechanical Properties and Fabrication of Al7075-Al2O3 Composites by Powder Metallurgy and Hot Pressing

Al7075-Al2O3 Kompozitlerin Toz Metalürjisi ve Sıcak Preslemeyle Üretimi ve Mekanik Özelliklerinin Araştırılması

Elif Işık(SİVAS BİLİM VE TEKNOLOJİ ÜNİVERSİTESİ)0000-0001-8289-9512
Aleyna Taşkın(ONDOKUZ MAYIS ÜNİVERSİTESİ)0000-0002-8308-9957
Mahmut Can Şenel(ONDOKUZ MAYIS ÜNİVERSİTESİ)0000-0001-7897-1366
Pages
307–320
Publication Date
2024-12-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

However, a decrease in mechanical properties was observed at 15wt.% alumina reinforcement due to the agglomeration of alumina particles.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this work, the fabrication and characterization of Al7075 aluminum matrix composites with different weight ratios (1, 3, 6, 9, 12, 15wt.%) of alumina (Al2O3) contents were carried out.
📊
Key Findings & Data:The microstructure, density, porosity rate, hardness, and compressive strength of the samples were examined which were fabricated via the powder metallurgy and induction hot pressing methods.
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Conclusion & Impact:However, a decrease in mechanical properties was observed at 15wt.% alumina reinforcement due to the agglomeration of alumina particles.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Al7075 alaşımı · alümina · toz metalürjisi

Abstract

In this work, the fabrication and characterization of Al7075 aluminum matrix composites with different weight ratios (1, 3, 6, 9, 12, 15wt.%) of alumina (Al2O3) contents were carried out. The microstructure, density, porosity rate, hardness, and compressive strength of the samples were examined which were fabricated via the powder metallurgy and induction hot pressing methods. As a result of the study, it was seen that an increase in alumina reinforcement positively affected the microstructure and mechanical properties of the composite up to a certain rate (12% by weight). The highest density (2.7 g cm-3), hardness (170±2 HV), compressive strength (471±6 MPa), and lowest porosity rate (8.2%) were achieved in the Al7075-12%Al2O3 composite. However, a decrease in mechanical properties was observed at 15wt.% alumina reinforcement due to the agglomeration of alumina particles.

Özet

Bu çalışmada, ağırlıkça farklı oranlarda (%1, 3, 6, 9, 12, 15) alümina (Al2O3) içeren Al7075 alüminyum matrisli kompozitlerin üretimi ve karakterizasyonu gerçekleştirilmiştir. Toz metalürjisi ve indüksiyonla sıcak presleme yöntemleriyle üretilen numunelerin mikroyapısı, yoğunluğu, gözeneklilik oranı, sertliği ve basma dayanımı incelenmiştir. Çalışma sonucunda artan alümina takviyesinin belli bir orana kadar (ağırlıkça %12) kompozitin mekanik özelliklerini arttırdığı görülmüştür. En yüksek yoğunluğa (2.7 g cm-3), sertliğe (170±2 HV), basma dayanımına (471±6 MPa) ve en düşük gözeneklilik oranına (%8.2) Al7075-%12Al2O3 kompozitte erişilmiştir. Ancak ağırlıkça %15 alümina takviye oranında alümina partiküllerinin topaklanmasından kaynaklı olarak mekanik özeliklerde düşüş görülmüştür.

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Cite This Article

Işık, E., Taşkın, A., Şenel, M. C. (2024). Investigation of the Mechanical Properties and Fabrication of Al7075-Al2O3 Composites by Powder Metallurgy and Hot Pressing. Ordu Üniversitesi Bilim ve Teknoloji Dergisi, Cilt: 14 Sayı: 2, 307–320. https://doi.org/10.54370/ordubtd.1441367

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