A new parameter to evaluate the glass-forming ability of bulk metallic glasses

✍ Scribed by Z.Y. Suo; K.Q. Qiu; Q.F. Li; J.H. You; Y.L. Ren; Z.Q. Hu

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 435 KB
• Volume: 528
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2010.09.027

✦ Synopsis

Based on the consideration of the liquid phase stability, the resistance to crystallization and the glass transition enthalpy, a new criterion Q, defined as ((T g + T x )/T l )•( E/ H), where the T g , T x , T l , E and H are the glass transition temperature, the onset crystallization temperature, the liquidus temperature, the crystalline enthalpy and the fusion enthalpy, respectively, has been proposed for evaluating the glass-forming ability of bulk metallic glasses. The new criterion Q exhibits better correlation with the maximum cross section thickness (D m ) for glass formation compared with (=T x /(T l + T g )), T rg (=T g /T l ) and T x (=T x -T g ) respectively. The available data from literatures and experiments have confirmed the effectiveness of the newly developed criterion.