کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1601861 | 1005219 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Formation of Zr66.7Al11.1Ni22.2 noncrystalline alloys demonstrated by molecular dynamics simulations based on distorted plastic crystal model Formation of Zr66.7Al11.1Ni22.2 noncrystalline alloys demonstrated by molecular dynamics simulations based on distorted plastic crystal model](/preview/png/1601861.png)
Molecular dynamics simulations with a scheme to treat groups of atoms in an intermetallic compound as a hypothetical cluster were performed for Zr–Ni base alloys by allowing random orientations of the clusters that were imitated to plastic crystals in a class of soft matter. A binary Zr66.7Ni33.3 and ternary Zr66.7Al11.1Ni22.2 and Zr66.7Al22.2Ni11.1 alloys were analyzed for their local atomic arrangements and forming ability of a noncrystalline structure with total pair-distribution and interference functions and Voronoi polyhedra. The analysis revealed that a Zr66.7Al11.1Ni22.2 alloy created from the tetragonal Zr2Ni structure by replacing Ni with Al reproduces the features of the local atomic arrangements of the experimental data for a Zr60Al15Ni25 bulk metallic glass (BMG) in a supercooled liquid state while the alloy from the Zr6Al2Ni structure by substituting Al and Ni atoms agrees to the BMG in an as-quenched state.
Journal: Intermetallics - Volume 16, Issue 6, June 2008, Pages 819–826