YERÇEKİMİNE TERS VE GELENEKSEL DÖKÜM YÖNTEMLERİ İLE ÜRETİLEN AlSi ALAŞIMININ ADHESİF AŞINMA DAVRANIŞININ İNCELENMESİ

Year 2010, Volume: 25 Issue: 2, 0 - , 15.02.2013

Hasan Hasırcı , Ferhat Gül

Abstract

Bu çalışmada, geleneksel yerçekimi ve yerçekimine ters döküm yöntemleri ile üretilen AlSi alüminyum alaşımınınadhesif aşınma davranışı incelendi. Numuneler, yerçekimine ters ve geleneksel döküm yöntemleri ile yaşkum kalıba 600, 640 ve 690 °C sıcaklıkta, 100, 250 ve 500 mmHg vakum şartlarında dökülerek üretildi. Bu numuneler,disk üzerinde pim adesif aşınma cihazında test edildi. Adhesif aşınma testleri 20 ve 60 N yükler altındave 1 m/s kayma hızında gerçekleştirildi. Adhesif aşınma test sonuçları; düşük yükte (20N) alaşımın aşınma kaybınınsertliği ile benzer bir değişim sergilediği, ancak yük arttığında (60N) alaşımda meydana gelen sertlik artışındandolayı nedeniyle adhesif aşınma direncinin azaldığını gösterdi.

Keywords

Alüminyum alaşımları, sertlik, mikroyapı, yerçekimine ters döküm, adhesif aşınma.

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