Invar FeNi Alaşımında Martensitik Faz Dönüşümlerinin Moleküler Dinamik Simülasyon Yöntemi ile Araştırılması

Yıl 2018, Cilt: 8 Sayı: 1, 7 - 13, 31.01.2018

Eşe Akpınar , Seyfettin Çakmak

Öz

Bu
çalışmada, invar Fe₆₄Ni₃₆ alaşımında sıcaklığa bağlı
martensitik faz dönüşümleri Moleküler Dinamik Simulasyon (MDS) yöntemiyle
araştırılmıştır. Atomlararası etkileşimler Gömülmüş atom yönteminin Sutton-
Chen versiyonu kullanılarak modellenmiştir. Martensitik faz dönüşümlerini
belirlemek için, model sistemin sıcaklığa bağlı enerji ve hacim değişimi
incelenmiştir. Yapısal karakterizasyon radyal dağılım fonksiyonu (RDF) ve yer
değiştirmenin kare ortalaması (MSD) kullanılarak yapılmıştır. Elde edilen
termodinamik ve yapısal veriler değerlendirilerek, invar Fe₆₄Ni₃₆
ikili alaşım sisteminin martensitik faz dönüşümü sergilediği gözlenmiştir.    

Anahtar Kelimeler

Martensitik faz dönüşümleri, Moleküler dinamik simülasyon

Kaynakça

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