Ti6Al4V ALAŞIMININ FİBER LAZER KAYNAK KABİLİYETİ

Yıl 2017, Cilt: 12 Sayı: 3, 140 - 152, 06.07.2017

Ceyhun Köse Engin Karaca

Öz

Bu çalışmada, Ti6Al4V
titanyum alaşımı levhalar fiber lazer kaynak yöntemiyle birleştirilmiştir. Farklı
ısı girdisi şartlarının, fiber lazer kaynaklı birleştirmelerin metalurjik ve
mekanik özelliklerine etkileri incelenmiştir. Yüksek ısı girdisi ile
birleştirilen numunenin kaynak metalinde düşük ısı girdisiyle birleştirilen
numunenin mikroyapısına göre bir miktar tane irileşmesi meydana geldiği, kaynak
metalinde birincil α yapılarının hacim oranının arttığı gözlenmiştir. Düşük ısı
girdisiyle birleştirilen numunenin kaynak metali mikroyapısı basketweave ya da asiküler
α' ve tane sınırlarında birincil β tanelerinden meydana gelmiştir. Düşük ısı
girdisiyle birleştirilen numunenin çekme dayanımı, yüksek ısı girdisiyle
birleştirilen numuneye göre yüksek bulunurken sünekliği daha az bulunmuştur. 

Anahtar Kelimeler

Fiber Lazer Kaynak, Mikroyapı, Mekanik Özellikler, Titanyum, Ti6Al4V Alaşımı, Mekanik Özellikler

Kaynakça

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