Joining of Al 2024 Based B4C/SiC Particle-Reinforced Hybrid Composites with TIG Welding

Öz

In the present study, weldability of Al 2024 based B4C/SiC particle-reinforced hybrid composite materials produced by powder metallurgy and hot extrusion route is investigated. B4C and SiC are added to the pre-alloyed Al 2024 (Al-Cu-Mg). Matrix material and reinforcing components are mixed in a three-dimensional mixer for 45 min. Powders are compacted with uniaxial compression and the samples of powder metal block are produced. Produced block samples are sintered at 600oC and then extruded at 500oC. Ultimate extruded products are joined by the Tungsten Inert Gas (TIG) welding. Macro and micro examination depending on the type of reinforcing component after welding operation are studied.

Anahtar Kelimeler

• Al 2024,Hybrid composites

Al 2024 Esaslı B4C/SiC Parçacık Takviyeli Hibrit Kompozitlerin TIG Kaynağı ile Birleştirilmesi

Öz

Yapılan çalışmada, toz metalurjisi ve sıcak ekstrüzyon yolu ile üretilmiş Al 2024 esaslı B4C/SiC parçacık takviyeli hibrit kompozitlerin kaynaklanabilirliği incelenmiştir. Ön alaşımlı Al 2024 (Al-Cu-Mg) tozu içerisine B4C ve SiC ilave edilmiştir. Matris malzeme ve takviye elemanları 3 boyutlu karıştırıcıda 45 dakika süre ile karıştırılmıştır. Karışım tozlar tek yönlü basınç altında preslenerek toz metal blok numuneler üretilmiştir. Elde edilen blok numuneler 600oC de sinterlenmiş ve akabinde 500oC sıcaklıkta ekstrüze edilmiştir. Ekstrüze edilmiş nihai ürünler Tungsten Inert Gas (TIG) yöntemi kullanılarak birleştirilmiştir. Kaynak işlemi sonrası takviye elemanın türüne bağlı olarak makro ve mikro incelemeler yapılmıştır.

Anahtar Kelimeler

• Al 2024,Hibrit kompozit,TIG kaynağı

Kaynakça

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