材料科学
金属
非晶态金属
热力学
冶金
物理
合金
作者
Haocheng Feng,Xingguang Zhang,Shaopeng Pan,Xiaofeng Niu,Junwei Qiao,Kaikai Song,Weimin Wang,Jingyu Qin
标识
DOI:10.1088/1402-4896/ad98c8
摘要
Abstract Utilizing classical molecular dynamics simulations, this paper delves into close correlations among thermodynamic, structural and mechanical properties of Mg90-xCuxY10 metallic glasses. The investigation reveals a peak in the glass transition temperature when the concentration of Cu (cCu) reaches about 0.6, indicating an optimal composition for enhanced glass-forming ability within this alloy system. Additionally, the thermodynamic parameters and some atomic structures of MgCuY metallic glasses, characterized by pair distribution function, coordination number and Warren-Cowley parameters, also change at cCu=0.6. Moreover, a quadratic relationship is uncovered between the glass transition temperature and enthalpy of mixing, and a linear relationship between strength and cCu is observed for cCu<0.6, which might be correlated with the atomic structure around Y atoms. These results have effectively verified that there is a close correlation among thermodynamic, structural and mechanical properties of metallic glass.
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