Wear Behaviors of AA 6063 Aluminum Alloys Reinforced with in situ Al3Ti Particles


Sun Y.

TRIBOLOGY TRANSACTIONS, cilt.55, ss.224-229, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 55 Konu: 2
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1080/10402004.2011.647384
  • Dergi Adı: TRIBOLOGY TRANSACTIONS
  • Sayfa Sayıları: ss.224-229

Özet

The purpose of this study was to examine the microstructure and room temperature dry sliding wear performance of AA 6063 aluminum alloys containing up to 2% Ti under homogenized and heat-treated conditions. After casting, homogenizing heat treatment was applied to all produced alloys at 500 degrees C for 2 h. Heat treatment included water quenching after being kept at 500 degrees C for 2 h, and then an aging process was applied at four hour intervals up to 48 hours, at 150 degrees C. The microstructure of the homogenized and aged alloys was analyzed using a scanning electron microscope (SEM). Hardness measurements were carried out using a microhardness test. Wear tests were performed using a ball-on-disc method by measuring the wear scar areas. Results of the wear tests proved that the wear rate decreased in alloys containing Ti. Though aging heat treatment improved the wear resistance of Ti-free alloys, the wear resistance of each of the alloys containing Ti decreased.