Probing the indentation induced nanoscale damage of rhenium

Liu, Huaping; Xu, Chao; Liu, Chunmei; He, Genchun; Tian, Yu; Liu, Ying

doi:10.1016/j.matdes.2019.108362

Cited by 9 publications

(7 citation statements)

References 64 publications

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“…As illustrated in Figure 3, when the depth that the indenter penetrated into the crystalline planes exceeding a critical value, an obvious drop of the loading forces can be observed in all the P-h curves. This phenomenon is the so-called pop-in event, and produces discontinuous steps in the load-displacement curves [27,29,31]. Such pop-in event was reported to correspond to unambiguous transitions from reversible elastic to irreversible plastic deformations during the earliest stages of the indenting process, and has been agreed to be a phenomenon correlated with the nucleation of dislocations [29,31].…”

Section: Mechanical Responses Of Znse Nano Films Under Indentationsmentioning

confidence: 92%

“…A spherical rigid indenter with a diameter of 12.0 nm was initially positioned above the top surface of the ZnSe substrate. To describe the interaction between the indenter and the ZnSe substrate, Kelchner's theoretical model was employed, which has been widely used in the nanoindentation simulations of different material systems [27][28][29][31][32][33][34]]. Kelchner's theoretical model introduces a repulsive potential to simulate the frictionless contact between the indenter and the indented materials [35].…”

Section: Methodsmentioning

confidence: 99%

“…Fortunately, molecular dynamics (MD) simulation of nanoindentation can make up for the shortcomings of experimental technology. MD simulations have been widely used to investigate the nanoindentations of materials [25][26][27][28][29][30][31][32]. It can achieve the mechanical properties of materials.…”

Section: Introductionmentioning

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: 92%

Section: Methodsmentioning

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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“…Rhenium (Re) is a rare metal , with excellent properties such as catalytic properties, high-temperature resistance, and corrosion resistance. − As an important strategic material, 70% of rhenium resources are used in super high heat resistant alloys in aerospace and 30% in petroleum cracking and hydrogenation catalysts . Rhenium has no independent mineral and is only (1 × 10 –9 ) in the earth’s crust.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–

Liu

Zhao

et al. 2023

ACS Appl. Polym. Mater.

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With decreasing global rhenium resources, it has become important to separate and purify rhenium in secondary resources, so a preparation strategy for a chitosan-comodified surface-grafted thermosensitive ion-imprinted composite membrane (CS-Re-TIICM) was developed in this work. The key of this design was that the two ends of a poly(N,N-diethylacrylamide) (PDEA) chain were grafted onto the imprinted polymer separating the layer matrix and the surface of the membrane, respectively, which aimed to improve the selectivity and desorption ratio of this material simultaneously. The structure and morphology of this material were characterized by FTIR and SEM, respectively. In addition, CS-Re-TIICM was applied to the secondary leaching solution of the high-temperature alloy to test the actual separation effect, and results showed that CS-Re-TIICM, possessing thermoresponsive recognition sites, and the structure of the imprinting cavity could be adjusted by temperature, which helped this material achieve good selective separation and purification performance for ReO4 –. The maximum adsorption capacity was 0.1071 mmol/g at 35 °C. CS-Re-TIICM not only showed an excellent selectivity (separation ReO4 –/MnO4 – of 3.90 in the presence of interfering ion MnO4 –) but also presented an excellent desorption performance (desorption ratio of 68.94%) and good reusability (adsorption capacity of 0.0425 mmol/g, desorption ratio of 59.13%, and separation degree of 1.24). When CS-Re-TIICM was applied to the secondary leaching solution of high-temperature alloys, the purity of Re was increased from 35.41% to 65.10% after one adsorption/desorption cycle, which depicted a prospective application in the industrialized separation of ReO4 – from a complex environment.

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“…Salehinia et al [30] explored the coupled effects of indenter size, crystallographic orientation and structural defects on the load distribution at the beginning of plastic deformation in fcc metals using simulation and experiment. Liu et al [31] studied the properties and basic deformation behavior of rhenium during nanoindentation. Remington et al [32] studied the plastic deformation mechanism of tantalum in nanoindentation.…”

Section: Introductionmentioning

confidence: 99%

Ni/Ni₃Al interface-dominated nanoindentation deformation and pop-in events

Zhou

Shen

et al. 2021

Nanotechnology

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Nickel-based single crystal alloys have excellent mechanical properties due to its unique two-phase structure and interface. Therefore, molecular dynamics methods were used to simulate nanoindentation and microstructural evolution. We found the indenter reaction force and hardness of the Ni3Al phase is the largest. The pop-in event in Ni3Al phase is more obvious than that in the Ni phase and Ni/Ni3Al phase. Because lots of dislocations in the Ni3Al phase break through the barrier of the interface and cut into the Ni phase, while dislocations in the Ni phase only slip inside the Ni phase. Moreover, we found that the position of the starting point of the adhesion force recovery is mainly related to the elastic recovery of the material. The stronger the elastic recovery of the phase, the smaller the depth value corresponding to the starting point of the recovery. We further studied the variation of potential energy with indentation depth and found that the change of wave trough of the load-displacement (P-h) curve is related to stacking fault energy. This study has important theoretical guiding significance for the in-depth understanding and engineering application of the mechanical properties of nickel-based single crystal alloys.

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Probing the indentation induced nanoscale damage of rhenium

Cited by 9 publications

References 64 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

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–

Ni/Ni₃Al interface-dominated nanoindentation deformation and pop-in events

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Probing the indentation induced nanoscale damage of rhenium

Cited by 9 publications

References 64 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

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO4–

Ni/Ni3Al interface-dominated nanoindentation deformation and pop-in events

Contact Info

Product

Resources

About

Chitosan-Comodified Surface-Grafted Thermosensitive Ion-Imprinted Composite Membrane for the Selective Recognition and Separation of ReO₄^–

Ni/Ni₃Al interface-dominated nanoindentation deformation and pop-in events