Investigation of microstructure and tribological properties of Si3N4 reinforced Al7075 matrix composites

Aleyna Taşkın; Elif Işık; Mahmut Can Şenel

Article Details

Investigation of microstructure and tribological properties of Si3N4 reinforced Al7075 matrix composites

Authors:

Aleyna Taşkın | Elif Işık | Mahmut Can Şenel

Publisher:

Nigde Omer Halisdemir University

Main Topics:

Malzeme Tasarım ve Davranışları

Journal:

Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi Vol.14 Issue 2, pp.482-489

Document Type:

Article

Publication Date:

4/2025

Document Language:

Turkish

Document ID (Org No.):

2001345075

pISSN:

2564-6605

Keywords:

Abstract:

 In this study, composite materials were fabricated by Si3N4 reinforcement 1, 3, 6, 9, and 12wt. to the Al7075 matrix using the powder metallurgy and hot-pressing methods. Density, Vickers hardness, wear, and friction tests were applied to the fabricated composites. In addition, XRD, SEM, and SEM-EDX analyses were performed to examine the microstructures of the composites. As a result, the highest experimental density 2.65 gcm3, the highest Vickers hardness 205 HV, the lowest wear rate 0.00018 mm3Nm, the lowest mass loss 0.0025 g, and the lowest friction coefficient 0.38 values were obtained in the Al7075-9 Si3N4 composite. However, the tribological properties of the composite deteriorated due to the agglomeration of the reinforcement particles at the 12wt. Si3N4 content. As a result, it was determined that 9 Si3N4 addition to the Al7075 matrix improved the tribological properties of the composite.

 In this study, composite materials were fabricated by Si3N4 reinforcement 1, 3, 6, 9, and 12wt. to the Al7075 matrix using the powder metallurgy and hot-pressing methods. Density, Vickers hardness, wear, and friction tests were applied to the fabricated composites. In addition, XRD, SEM, and SEM-EDX analyses were performed to examine the microstructures of the composites. As a result, the highest experimental density 2.65 gcm3, the highest Vickers hardness 205 HV, the lowest wear rate 0.00018 mm3Nm, the lowest mass loss 0.0025 g, and the lowest friction coefficient 0.38 values were obtained in the Al7075-9 Si3N4 composite. However, the tribological properties of the composite deteriorated due to the agglomeration of the reinforcement particles at the 12wt. Si3N4 content. As a result, it was determined that 9 Si3N4 addition to the Al7075 matrix improved the tribological properties of the composite.

 In this study, composite materials were fabricated by Si3N4 reinforcement 1, 3, 6, 9, and 12wt. to the Al7075 matrix using the powder metallurgy and hot-pressing methods. Density, Vickers hardness, wear, and friction tests were applied to the fabricated composites. In addition, XRD, SEM, and SEM-EDX analyses were performed to examine the microstructures of the composites. As a result, the highest experimental density 2.65 gcm3, the highest Vickers hardness 205 HV, the lowest wear rate 0.00018 mm3Nm, the lowest mass loss 0.0025 g, and the lowest friction coefficient 0.38 values were obtained in the Al7075-9 Si3N4 composite. However, the tribological properties of the composite deteriorated due to the agglomeration of the reinforcement particles at the 12wt. Si3N4 content. As a result, it was determined that 9 Si3N4 addition to the Al7075 matrix improved the tribological properties of the composite.

 Yapılan bu çalışmada toz metalürjisi ve sıcak presleme yöntemleriyle Al7075 matrise ağırlıkça 1, 3, 6, 9 ve 12 katkı oranlarında Si3N4 ilave edilerek kompozit malzemeler üretilmiştir. Üretilen kompozitlere yoğunluk, Vickers sertliği, aşınma ve sürtünme testleri uygulanmıştır. Ayrıca kompozitlerin mikroyapılarını incelemek amacıyla XRD, SEM ve SEM-EDX analizleri yapılmıştır. Sonuç olarak en yüksek deneysel yoğunluk 2.65 gcm3, en yüksek Vickers sertliği 205 HV, en düşük aşınma oranı 0.00018 mm3Nm, en düşük kütle kaybı 0.0025 g ve en düşük sürtünme katsayısı 0.38 değerleri Al7075-9 Si3N4 kompozitte elde edilmiştir. Ancak ağırlıkça 12 Si3N4 katkı oranında takviye partiküllerinin topaklanmasından dolayı kompozitin tribolojik özellikleri kötüleşmiştir. Sonuç olarak Al7075 matrise 9 Si3N4 katkısının kompozitin tribolojik özelliklerini iyileştirdiği tespit edilmiştir.

Article Details

Investigation of microstructure and tribological properties of Si3N4 reinforced Al7075 matrix composites

Authors:

Aleyna Taşkın | Elif Işık | Mahmut Can Şenel

Publisher:

Nigde Omer Halisdemir University

Main Topics:

Malzeme Tasarım ve Davranışları

Journal:

Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi Vol.14 Issue 2, pp.482-489

Document Type:

Article

Publication Date:

4/2025

Document Language:

Turkish

Document ID (Org No.):

2001345075

pISSN:

2564-6605

Al7075 alloy

Si3N4

Composite

Powder MetallurgyAl7075 alaşımı

Si3N4

Kompozit

Toz Metalürjisi

Issues

Article Details

Authors: Aleyna Taşkın | Elif Işık | Mahmut Can Şenel

Publisher: Nigde Omer Halisdemir University

Main Topics: Malzeme Tasarım ve Davranışları

Journal: Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi Vol.14 Issue 2, pp.482-489

Document Type: Article

Publication Date: 4/2025

Document Language: Turkish

Document ID (Org No.): 2001345075

pISSN: 2564-6605

Issues

Authors:

Aleyna Taşkın | Elif Işık | Mahmut Can Şenel

Publisher:

Nigde Omer Halisdemir University

Main Topics:

Malzeme Tasarım ve Davranışları

Journal:

Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi Vol.14 Issue 2, pp.482-489

Document Type:

Article

Publication Date:

4/2025

Document Language:

Turkish

Document ID (Org No.):

2001345075

pISSN:

2564-6605