The Wear Properties of In-Situ 7075 Al-Ti Composites Produced by Powder Metallurgy Route


Ay H., Ozyurek D., Yildirim M., Bostan B.

5th International Advances in Applied Physics and Materials Science Congress and Exhibition (APMAS), Oludeniz, Türkiye, 16 - 19 Nisan 2015, cilt.1727 identifier identifier

  • Cilt numarası: 1727
  • Doi Numarası: 10.1063/1.4945956
  • Basıldığı Şehir: Oludeniz
  • Basıldığı Ülke: Türkiye

Özet

In this study, the wear properties of in-situ 7075 Al-Ti composites produced by powder metallurgy route were investigated. Different amount of Ti (2, 4, 6 %) added to gas atomized 7075 Al alloy powders and they were mixed in turbula with 47rpm for 45 minutes. Then the mixed powders were pre-shaped by press under 600 MPa pressure. The samples were cooled in the furnace after sintered at 580 degrees C for 4 hours in the atmosphere controlled furnace. Standard metallographic process such as grinding, polishing and etching were applied to sintered samples. The hardness values were measured. Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD) examines were carried out. The wear tests were performed in a pin-on disc type wear apparatus with 1 ms(-1) sliding speed at six different sliding distance (500-3000 m) under 30 N loads. As a result of studies, hardness values were increased with increasing Ti content, in addition the weight losses were decreased with increasing Ti amount.