The surface effect on the mechanical behavior of MG nanowires: A molecular dynamic simulation
Source abstract
Abstract
The surface is crucial for the properties of a nanoscale metallic glass structure. How the atoms organize on the surface and affect the properties remains unclear. Here, we investigate the surface effect on the mechanical behavior of metallic glass nanowires via molecular dynamic simulation. The results show that the surface-induced Laplace pressure produces considerable pressure inside the nanowire, which causes a denser internal atomic packing and contributes to high ultimate strength. Besides the effect on the internal, the atoms on the surface are arranged uniquely. A layering structure is found on the surface of metallic glass nanowires, suggesting a certain level of order on the surface. The mechanical response is strongly dependent on the order of the surface and the mechanisms are analyzed from the perspective of the atomic deformation pattern. The influence of size on the surface effect is also discussed in detail.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Theoretical and Computational Physics · nanoparticles nucleation surface interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (66)
Show source-provided references
1. Super plastic bulk metallic glasses at room temperature10.1126/science.1136726 ↗
2. Bulk metallic glasses10.1063/PT.3.1885 ↗
3. Dynamic mechanical relaxation in bulk metallic glasses: a review10.1016/j.jmst.2014.04.018 ↗
4. Enhancement of glass-forming ability and plasticity via alloying the elements having positive heat of mixing with Cu in Cu48Zr48Al4 bulk metallic glass10.1016/j.jallcom.2018.10.396 ↗
5. Enhanced compressive plasticity in a Cu-Zr-Al–Based metallic glass composite10.1016/j.jallcom.2018.11.300 ↗
6. Tailoring plasticity of metallic glasses via interfaces in Cu/amorphous CuNb laminates10.1557/jmr.2017.249 ↗
7. Nanomoulding with amorphous metals10.1038/nature07718 ↗
8. Bulk metallic glass: the smaller the better10.1002/adma.201002148 ↗
9. Is metallic glass poised to come of age?10.1038/nmat4297 ↗
10. Tensile ductility and necking of metallic glass10.1038/nmat1984 ↗
11. Dislocation starvation and exhaustion hardening in Mo alloy nanofibers10.1016/j.actamat.2011.12.027 ↗
12. Tunable tensile ductility in metallic glasses10.1038/srep01096 ↗
13. Brittle-to-ductile transition in metallic glass nanowires10.1021/acs.nanolett.6b01636 ↗
14. Onset of plasticity and its relation to atomic structure in CuZr metallic glass nanowire: a molecular dynamics study10.1016/j.jallcom.2015.09.149 ↗
15. Tensile behavior of Cu50Zr50 metallic glass nanowire with a B2 crystalline precipitate10.1016/j.physb.2017.12.005 ↗
16. Fast surface dynamics on a metallic glass nanowire10.1021/acsnano.1c00500 ↗
17. Tailoring structural inhomogeneities in Al90Sm10 metallic glass nanowire via torsional deformation10.1016/j.jnoncrysol.2022.121830 ↗
18. Intrinsic and extrinsic size effects in the deformation of metallic glass nanopillars10.1016/j.actamat.2011.11.023 ↗
19. Key factors affecting mechanical behavior of metallic glass nanowires10.1038/srep41365 ↗
20. Deformation behavior of metallic glasses with shear band like atomic structure: a molecular dynamics study10.1038/srep30935 ↗
21. The effect of loading methods on the microstructural evolution and degree of strain localization in Cu50Zr50metallic glass composite nanowires: a molecular dynamics simulation study10.1016/j.jmgm.2022.108216 ↗
22. Reinforcement of nanoglasses by interface strengthening10.1016/j.scriptamat.2017.08.004 ↗
23. A way by inhomogeneous plastic deformation of metallic glasses to synthesize metallic nanoglasses: a brief review10.1016/j.mtla.2019.100390 ↗
24. In situ visualization of Ni–Nb bulk metallic glasses phase transition10.1016/j.actamat.2013.05.014 ↗
25. Spheres of the metallic glass Au55Pb22.5Sb22.5 and their surface characteristics10.1063/1.93110 ↗
26. In situ formed two-phase metallic glass with surface fractal microstructure10.1016/j.actamat.2004.01.036 ↗
27. Surface crystallization of metallic glasses10.1016/0025-5416(88)90049-3 ↗
28. Computer simulation of the strong surface effects on deformation behaviors of metallic glass nanowires10.1016/j.scriptamat.2014.07.017 ↗
29. Three-dimensional phase-field simulation on the deformation of metallic glass nanowires10.1016/j.jallcom.2013.12.114 ↗
30. Free volume gradient effect on mechanical properties of metallic glasses10.1016/j.scriptamat.2016.11.003 ↗
31. Mechanical properties of spinodal decomposed metallic glass composites10.1016/j.scriptamat.2017.03.019 ↗
32. Atomic simulations of plastic deformation behavior of Cu50Zr50 metallic glass10.1016/j.jnoncrysol.2017.06.011 ↗
33. Chemical segregation in metallic glass nanowires10.1063/1.4901739 ↗
34. Interfaces and interphases in nanoglasses: surface segregation effects and their implications on structural properties10.1016/j.actamat.2016.05.002 ↗
35. Microstructure formation of metallic nanoglasses: insights from molecular dynamics simulations10.1016/j.actamat.2017.12.014 ↗
36. Development of one-dimensional periodic packing in metallic glass spheres10.1016/j.scriptamat.2019.10.026 ↗
37. Mechanical behavior of amorphous alloys10.1016/j.actamat.2007.01.052 ↗
38. Processing dependence of mechanical properties of metallic glass nanowires
39. An index of shear banding susceptibility of metallic glasses10.1016/j.intermet.2015.11.010 ↗
40. Atomistic origin of size effects in fatigue behavior of metallic glasses10.1016/j.jmps.2017.04.005 ↗
41. Buckling of Cu–Zr-based metallic glasses nanowires: molecular dynamics study of surface effects10.1007/s10853-014-8512-9 ↗
42. Fast parallel algorithms for short-range molecular dynamics10.1006/jcph.1995.1039 ↗
43. Effects of stable and unstable stacking fault energy on dislocation nucleation in nano-crystalline metals10.1088/0965-0393/24/8/085017 ↗
44. Embedded-atom method: derivation and application to impurities, surfaces, and other defects in metals10.1103/PhysRevB.29.6443 ↗
45. Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool
46. Canonical dynamics of the Nos\'e oscillator: stability, order, and chaos10.1103/PhysRevA.33.4253 ↗
47. Thermoplastic deformation and structural evolutions in nanoimprinting metallic glasses using molecular dynamics analysis10.1016/j.jnoncrysol.2015.07.011 ↗
48. Crystal–melt interface kinetic behaviors of iron
49. Structural and mechanical behaviors of Mg-Al metallic glasses investigated by molecular dynamics simulations10.1016/j.commatsci.2020.109895 ↗
50. Atomic simulations of plastic deformation mechanism of MgAl/Mg nanoscale amorphous/crystalline multilayers10.1016/j.jnoncrysol.2018.06.039 ↗
51. Theory of shear banding in metallic glasses and molecular dynamics calculations10.2320/matertrans.MJ200769 ↗
52. Butt · 2013
53. Molecular dynamics simulation and local quantities
54. Pressure tensor of a spherical interface10.1063/1.462992 ↗
55. Statistical mechanics of inhomogeneous fluids
56. Molecular-level calculation scheme for pressure in inhomogeneous systems of flat and spherical layers10.1080/102866202100002518a ↗
57. Microscopic pressure tensor for hard-sphere fluids10.1103/PhysRevE.66.011203 ↗
58. A molecular dynamics study of liquid drops10.1063/1.447358 ↗
59. The pressure in interfaces having cylindrical geometry10.1063/1.5037054 ↗
60. Pressure dependence and isotope effect of self-diffusion in a metallic glass10.1103/PhysRevLett.65.1219 ↗
61. Atomic packing and short-to-medium-range order in metallic glasses10.1038/nature04421 ↗
62. Structural heterogeneity and medium-range order in Zr x Cu 100− x metallic glasses10.1103/PhysRevB.80.184201 ↗
63. High pressure atomic structure of Zr–Cu metallic glass via EXAFS spectroscopy and molecular dynamics simulations10.1080/08957959.2019.1695797 ↗
64. The effect of thermal history on structure and mechanical properties of Cu64Zr36 metallic glass10.1016/j.jnoncrysol.2019.119742 ↗
65. Free volume theories of the glass transition and the special case of metallic glasses10.1007/BF00553936 ↗
66. Size effects on tensile and compressive strengths in metallic glass nanowires10.1016/j.jmps.2015.07.018 ↗