Quantum Sutton-Chen Potansiyeli ile Modellenen Sıvı PdSi Alaşımının Kristalizasyon ve Camsı Geçiş Sıcaklığına Basıncın Etkisi

Bu çalışmada atomlar arasındaki etkileşmelerin belirlenmesinde Kuantum Sutton Chen (K-SC) potansiyel fonksiyonu kullanılarak farklı soğutma hızları için model PdSi sıvı alaşımının kristallenme (Tc) ve camsı geçiş sıcaklıklarına (Tg) basıncınetkisi incelendi. 2,5x1011 K/s ve 2,5x1012K/s soğutma hızlarında sıvı fazdaki alaşım sisteminin sırasıyla kristal ve amorf faza dönüştüğü tespit edildi. Camsı geçiş sıcaklığı, Wendt-Abraham parametresi ve radyal dağılım fonksiyonu (RDF) piklerinden belirlendi. Basınç artışınınkristallenme, camsı geçiş sıcaklığıve Tg/Tm oranınıyükselterek camsı oluşum kabiliyetini arttırdığı tespit edildi.

The Effect of Pressure to the Crystallization and Glass Transition Temperature of Liquid PdSi Alloy Modelled with Quantum Sutton-Chen Potential

In this work, the effect of pressure on the crystallization (Tc) and glass transition (Tg) temperatures of a modelledPdSi liquid alloy was investigated for different cooling rates by using Quantum Sutton Chen(K-SC) potentialwhich is used to determine the interactions between atoms. It was determined that at the cooling rates of 2,5x1011K/s and 2,5x1012 K/s the alloy system in liquid phase transformed into crystal and amorphous phase, respectively.The glass transition temperature was defined by the Wendt-Abraham parameter and radial distribution function(RDF) peaks. It was concluded that the increment of pressure led to an increase in the crystallization and glasstransition temperatures and the ratio of Tg/Tm resulted in an improvement of the glass forming ability.

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