LAZER KAYNAĞI İLE BİRLEŞTİRİLEN AISI 2205 DUBLEKS PASLANMAZ ÇELİĞİN MEKANİK VE MİKROYAPI ÖZELLİKLERİNİN İNCELENMESİ

Yıl 2016, Cilt 11, Sayı 4, 98 - 109, 13.10.2016

CEYHUN KÖSE RAMAZAN KAÇAR

Öz

Bu çalışmada, AISI 2205 dubleks paslanmaz çelik levhalar CO₂ lazer ışını kaynak yöntemiyle %50 Ar + %50 He gaz korumalı ortamda, 4000W lazer gücüyle ve 90cm/dk kaynak hızıyla birleştirilmiştir. Kaynaklı birleştirmelerin mekanik özelliklerini belirleyebilmek için çekme ve çentik darbe testleri uygulanmıştır. Kaynaklı bağlantının sertlik ölçümü kaynak yönüne dik kesitten gerçekleştirilmiştir. Mikroyapı karakteristikleri ise Optik mikroskop, Taramalı Elektron Mikroskobu (SEM), Enerji Dağılımlı X-Işını Spektroskopisi (EDS) ve XRD vasıtasıyla incelenmiştir. Sonuç olarak, CO₂ lazer kaynak yöntemi ile birleştirilen dubleks paslanmaz çelik kaynak metali ve ısı tesiri altındaki bölgenin (ITAB) düşük ısı girdisine bağlı yüksek soğuma oranından etkilenerek final yapısının ferrit lehine değiştiği tespit edilmiştir. Kaynaklı birleştirmenin mekanik özellikleri kabul edilebilir değerlerde bulunmuştur.

Anahtar Kelimeler

Paslanmaz Çelik, AISI 2205, CO2 Lazer Kaynağı, Mekanik Özellikler, Mikroyapı

Öz

Kaynakça

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