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| 001 | 173410 | ||
| 005 | 20210129214631.0 | ||
| 024 | 7 | _ | |a 10.1088/0965-0393/22/6/065007 |2 doi |
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| 024 | 7 | _ | |a 1361-651X |2 ISSN |
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| 037 | _ | _ | |a FZJ-2014-06820 |
| 082 | _ | _ | |a 530 |
| 100 | 1 | _ | |a Gao, X. Z. |0 P:(DE-HGF)0 |b 0 |e Corresponding Author |
| 245 | _ | _ | |a Atomic structure and energetics of amorphous-crystalline CuZr interfaces: a molecular dynamics study |
| 260 | _ | _ | |a Bristol |c 2014 |b IOP Publ. |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1418646478_10606 |2 PUB:(DE-HGF) |
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| 520 | _ | _ | |a The local order of the binary alloy CuZr differs between the crystal (B2 phase) and the metallic glass (MG). In the B2 phase, both Cu and Zr reside in the center of polyhedra whose surfaces are composed of six tetragons and eight hexagons. In the glass, many different polyhedra occur with a large fraction of five-edged faces. However, little has hitherto been known about the local order in the interfacial region between glass and crystal. Using embedded-atom potential based molecular-dynamics simulations, we find it differs markedly from that in the glass. For example, distinctly fewer pentagons occur on the surfaces of Voronoi polyhedra in the interface than on those in the MG. Moreover, there is an increased variety of polyhedra allowing the interface to be more densely packed than the MG. Details of the polyhedra distribution and consequently various interfacial properties depend on the orientation of the crystals and to some degree also on the thermal history of the sample. For the investigated surfaces, we find that the interfacial energy is the smallest and the crystallization activation energy highest for the closest-packed crystalline surface. This result can be rationalized by the argument that the lattice spacing of the closest-packed surface is most commensurate with the wavelength associated with the density pair correlation function of the disordered system. In practice, our result implies that the reinforcement of MGs is longest-lived for nanocrystals with close-packed surfaces. |
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| 700 | 1 | _ | |a Kong, L. T. |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Li, J. F. |0 P:(DE-HGF)0 |b 3 |
| 773 | _ | _ | |a 10.1088/0965-0393/22/6/065007 |g Vol. 22, no. 6, p. 065007 - |0 PERI:(DE-600)2001737-6 |n 6 |p 065007 |t Modelling and simulation in materials science and engineering |v 22 |y 2014 |x 1361-651X |
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