Effect of Titanium Reinforcement Amount on Mechanical and Microstructural Properties of Alumina Based Composites

Samet Yavuz; Mevlüt Gürbüz

Makale detayları

Effect of Titanium Reinforcement Amount on Mechanical and Microstructural Properties of Alumina Based Composites

Yazarlar:

Samet Yavuz | Mevlüt Gürbüz

Yayıncı:

Ordu University

Ana Başlıklar:

Malzeme Tasarım ve Davranışları

Dergi:

Ordu Üniversitesi Bilim ve Teknoloji Dergisi Vol.14 Issue 2, pp.361-373

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001332803

pISSN:

2146-6440

Anahtar kelimeler:

Özet:

 In this study, Ti powder was used as the second phase reinforcement to improve the brittle and brittle structure of Al2O3, which is widely used in industry. Increasing amounts of 0.5, 1, 3, 5 and 10 Ti were added to the alumina determined as the matrix phase. Pure alumina and alumina-titanium composites produced by powder metallurgy method were sintered at a sintering temperature of 1550 oC and a dwell time of 120 minutes. The densities of the produced composites were measured before and after sintering. After sintering, hardness tests, fracture toughness measurement, compression tests were carried out and microstructure analyzes were performed by taking SEM images. As a result of the examinations, it was determined that the AT05 composite obtained with 0.5 Ti reinforcement in the alumina matrix was the most appropriate reinforcement ratio. In the 0.5 Ti reinforced composite, 94 density, 14.84 GPa hardness, 7.37 MPa.m12 fracture toughness, 1207 MPa compressive strength values were obtained. Increasing the titanium addition rate negatively affected the results of mechanical experiments and microstructure analysis, and lower mechanical properties were obtained in the 10 Ti reinforced composite compared to both monolithic alumina and AT05 composite.

 In this study, Ti powder was used as the second phase reinforcement to improve the brittle and brittle structure of Al2O3, which is widely used in industry. Increasing amounts of 0.5, 1, 3, 5 and 10 Ti were added to the alumina determined as the matrix phase. Pure alumina and alumina-titanium composites produced by powder metallurgy method were sintered at a sintering temperature of 1550 oC and a dwell time of 120 minutes. The densities of the produced composites were measured before and after sintering. After sintering, hardness tests, fracture toughness measurement, compression tests were carried out and microstructure analyzes were performed by taking SEM images. As a result of the examinations, it was determined that the AT05 composite obtained with 0.5 Ti reinforcement in the alumina matrix was the most appropriate reinforcement ratio. In the 0.5 Ti reinforced composite, 94 density, 14.84 GPa hardness, 7.37 MPa.m12 fracture toughness, 1207 MPa compressive strength values were obtained. Increasing the titanium addition rate negatively affected the results of mechanical experiments and microstructure analysis, and lower mechanical properties were obtained in the 10 Ti reinforced composite compared to both monolithic alumina and AT05 composite.

 In this study, Ti powder was used as the second phase reinforcement to improve the brittle and brittle structure of Al2O3, which is widely used in industry. Increasing amounts of 0.5, 1, 3, 5 and 10 Ti were added to the alumina determined as the matrix phase. Pure alumina and alumina-titanium composites produced by powder metallurgy method were sintered at a sintering temperature of 1550 oC and a dwell time of 120 minutes. The densities of the produced composites were measured before and after sintering. After sintering, hardness tests, fracture toughness measurement, compression tests were carried out and microstructure analyzes were performed by taking SEM images. As a result of the examinations, it was determined that the AT05 composite obtained with 0.5 Ti reinforcement in the alumina matrix was the most appropriate reinforcement ratio. In the 0.5 Ti reinforced composite, 94 density, 14.84 GPa hardness, 7.37 MPa.m12 fracture toughness, 1207 MPa compressive strength values were obtained. Increasing the titanium addition rate negatively affected the results of mechanical experiments and microstructure analysis, and lower mechanical properties were obtained in the 10 Ti reinforced composite compared to both monolithic alumina and AT05 composite.

 Yapılan bu çalışmada endüstride yaygın olarak kullanılan Al2O3ün gevrek ve kırılgan olan yapısının iyileştirilmesi adına ikinci faz takviyesi olarak Ti tozu kullanılmıştır. Matris fazı olarak belirlenen alüminaya artan oranlarda 0,5, 1, 3, 5 ve 10 Ti takviyeleri yapılmıştır. Toz metalurjisi yöntemiyle üretilen saf alümina ve alümina-titanyum kompozitleri 1550 oC sinterleme sıcaklığı ve 120 dk. bekleme süresinde sinterlenmiştir. Üretilen kompozitlerin sinterleme öncesi ve sonrası yoğunlukları ölçülmüştür. Sinterleme sonrası sertlik deneyleri, kırılma tokluğu ölçümü, basma deneyleri gerçekleştirilmiş ve SEM görüntüleri alınarak mikro yapı analizleri yapılmıştır. Yapılan incelemeler sonucunda alümina matrise 0,5 Ti takviyesi ile elde edilen AT05 kompozitinin en uygun takviye oranı olduğu belirlenmiştir. 0,5 Ti takviyeli kompozitte 94 yoğunluk, 14,84 GPa sertlik, 7,37 MPa.m12 kırılma tokluğu, 1207 MPa basma dayanımı değerleri elde edilmiştir. Titanyum ilave oranının artırılmasının mekanik deneyler ve mikro yapı analiz sonuçlarını olumsuz etkilediği ve 10 Ti takviyeli kompozitte hem monolitik alümina hem de AT05 kompozitine kıyasla daha düşük mekanik özellikler elde edilmiştir.

Makale detayları

Effect of Titanium Reinforcement Amount on Mechanical and Microstructural Properties of Alumina Based Composites

Yazarlar:

Samet Yavuz | Mevlüt Gürbüz

Yayıncı:

Ordu University

Ana Başlıklar:

Malzeme Tasarım ve Davranışları

Dergi:

Ordu Üniversitesi Bilim ve Teknoloji Dergisi Vol.14 Issue 2, pp.361-373

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001332803

pISSN:

2146-6440

Al2O3

Ti

sintering

compositeAl2O3

Ti

sinterleme

kompozit

Sayı

Makale detayları

Yazarlar: Samet Yavuz | Mevlüt Gürbüz

Yayıncı: Ordu University

Ana Başlıklar: Malzeme Tasarım ve Davranışları

Dergi: Ordu Üniversitesi Bilim ve Teknoloji Dergisi Vol.14 Issue 2, pp.361-373

Belge Tipi: Makale

Yayın Tarihi: 12/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001332803

pISSN: 2146-6440

Sayı

Yazarlar:

Samet Yavuz | Mevlüt Gürbüz

Yayıncı:

Ordu University

Ana Başlıklar:

Malzeme Tasarım ve Davranışları

Dergi:

Ordu Üniversitesi Bilim ve Teknoloji Dergisi Vol.14 Issue 2, pp.361-373

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001332803

pISSN:

2146-6440