Plastic deformation in zinc-blende AlN under nanoindentation: A molecular dynamics simulation

Cui, Yu-Hong; Li, Haitao; Xiang, Henggao; Peng, Xianghe

doi:10.1016/j.apsusc.2018.10.009

Cited by 5 publications

(2 citation statements)

References 45 publications

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“…For comparison, we also calculated the elastic recovery ratio of zinc-blende AlN and GaN according to the reported data [49,50]. For zinc-blende AlN and GaN, the estimated elastic recovery ratios of different indented planes are in the range of 35%-40% and 38%-42%, respectively [49,50]. Therefore, the elastic recovery ratios of ZnSe are very close to those of zinc-blende AlN and GaN.…”

Section: Mechanical Responses Of Znse Nano Films Under Indentationsmentioning

confidence: 87%

“…Among them, the recovery ratio of (001) plane is the highest (47%), followed by ( 110) plane (44%), and that of the (111) plane (37%) is the lowest. For comparison, we also calculated the elastic recovery ratio of zinc-blende AlN and GaN according to the reported data [49,50]. For zinc-blende AlN and GaN, the estimated elastic recovery ratios of different indented planes are in the range of 35%-40% and 38%-42%, respectively [49,50].…”

Section: Mechanical Responses Of Znse Nano Films Under Indentationsmentioning

confidence: 99%

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Orientation Dependent Mechanical Responses and Plastic Deformation Mechanisms of ZnSe Nano Films under Nanoindentation

Liu

et al. 2021

Nanomaterials

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Although ZnSe has been widely studied due to its attractive electronic and optoelectronic properties, limited data on its plastic deformations are available. Through molecular dynamics simulations, we have investigated the indentations on the (001), (110), and (111) planes of ZnSe nano films. Our results indicate that the elastic modulus, incipient plasticity, elastic recovery ratio, and the structural evolutions during the indenting process of ZnSe nano films show obvious anisotropy. To analyze the correlation of structural evolution and mechanical responses, the atomic displacement vectors, atomic arrangements, and the dislocations of the indented samples are analyzed. Our simulations revealed that the plastic deformations of the indented ZnSe nano films are dominated by the nucleation and propagation of 1/2<110> type dislocations, and the symmetrically distributed prismatic loops emitted during the indenting process are closely related with the mechanical properties. By studying the evolutions of microstructures, the formation process of the dislocations, as well as the formation mechanisms of the emitted prismatic loops under the indented crystalline planes are discussed. The results presented in this work not only provide an answer for the questions about indentation responses of ZnSe nano films, but also offer insight into its plastic deformation mechanisms.

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Section: Mechanical Responses Of Znse Nano Films Under Indentationsmentioning

confidence: 87%

Section: Mechanical Responses Of Znse Nano Films Under Indentationsmentioning

confidence: 99%

Orientation Dependent Mechanical Responses and Plastic Deformation Mechanisms of ZnSe Nano Films under Nanoindentation

Liu

et al. 2021

Nanomaterials

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Enhancement mechanism of fracture-resistance of CrMnFeCoNi high-entropy alloys: A molecular dynamics study

Liu

Xiang

et al. 2022

Advanced Powder Technology

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Influences of ultrasonic vibration directions, amplitudes, and frequencies on sapphire polishing studied by molecular dynamics

Xu,

Huang,

Liu

et al. 2024

Precision Engineering

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Plastic deformation in zinc-blende AlN under nanoindentation: A molecular dynamics simulation

Cited by 5 publications

References 45 publications

Orientation Dependent Mechanical Responses and Plastic Deformation Mechanisms of ZnSe Nano Films under Nanoindentation

Orientation Dependent Mechanical Responses and Plastic Deformation Mechanisms of ZnSe Nano Films under Nanoindentation

Enhancement mechanism of fracture-resistance of CrMnFeCoNi high-entropy alloys: A molecular dynamics study

Influences of ultrasonic vibration directions, amplitudes, and frequencies on sapphire polishing studied by molecular dynamics

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