The Effects of B4C Amount on Hardness and Wear Behaviours of 7075-B4C Composites Produced by Powder Metallurgy Method
Küçük Resim Yok
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Polish Acad Sciences Inst Physics
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, the effects of B4C amount on hardness and wear behaviours of 7075 Al-B4C composites produced by powder metallurgy method were investigated. Within the scope of work, different amount of B4C (3, 6, 9%) added into gas atomized 7075 Al powders. The powders were mixed in Turbula with 67 rpm for 45 min. Then the composite powders were pre-shaped by cold pressing under 600 MPa pressure. Pre-shaped samples were sintered in atmosphere controlled furnace at 580 degrees C for 4 h. Scanning electron microscope, X-ray diffraction examinations and hardness measurements were carried out after standard metallographic processes. Wear tests were performed in a pin on type wear apparatus under 30 N with 1 m s(-1) sliding speed, at six different sliding distances (500-3000 m). Results show that the hardness was increased with increasing of amount of B4C. At the end of wear tests the lowest weight loss were found to 9% B4C containing composites. In addition, it is determined that the weight loss increased with increasing sliding distance.
Açıklama
5th International Advances in Applied Physics and Materials Science Congress and Exhibition (APMAS) -- APR 16-19, 2015 -- Oludeniz, TURKEY
Anahtar Kelimeler
Aluminum-Matrix Composites, Mechanical-Properties, Microstructure
Kaynak
Acta Physica Polonica A
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
129
Sayı
4
