Mechanical characteristics of CNT-reinforced metallic glass nanocomposites by molecular dynamics simulations

Rezaei, Reza; Shariati, Mahmoud; Tavakoli-Anbaran, Hossein; Deng, Chuang

doi:10.1016/j.commatsci.2016.03.036

Cited by 45 publications

(10 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it is clear that the subtractive trend strongly relies on the MG composition. With the increase of Zr content, the monolithic MG tends to show a smoother behavior, which means that the plastic deformation comprises numerous interactive shear events [27,36]. Moreover, the stress-strain curves showed that the tensile strength of monolithic CuZr MGs is considerably lower than the B2-CuZr SMA.…”

Section: Resultsmentioning

confidence: 99%

Role of Glass Composition on Mechanical Properties of Shape Memory Alloy‐Metallic Glass Composites

Chupradit

Raya

Huy

et al. 2021

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In this work, the molecular dynamics (MD) simulation was applied to design a laminated composite structure comprised of the shape memory alloy (SMA) and Cu-Zr metallic glasses (MGs). A wide range of MG compositions was considered to tune the mechanical features and improve the homogenous plastic deformation during the tension loading. The results indicated that the martensitic transformation in the SMA inhibited the sudden shear band propagation in the composite for all the samples. Moreover, it was revealed that the mechanism of plasticity was significantly affected by the change of MG composition. In the Cu-rich MGs, the formation and propagation of thick shear bands occurred at the end of the tension loading; however, the increase in Zr content induced the interaction of multiple shear bands with finer configurations in the system. Nevertheless, the excessive Zr addition in the MG composition facilitated the aggregation of nanopores at the interface of SMA and MGs, which may be due to the softening effect in the Zr-rich MGs. Finally, it is concluded that an optimized MG composition is required for the trade-off between the plasticity and the strength in the SMA-MG composites.

show abstract

Section: Resultsmentioning

confidence: 99%

Role of Glass Composition on Mechanical Properties of Shape Memory Alloy‐Metallic Glass Composites

Chupradit

Raya

Huy

et al. 2021

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…The main reason for the difference Figure 6 shows that the CNTs can bear more loads during the out-of-plane loadings, resulting in a better reinforcement of CNHONNs in the out-of-plane direction due to the addition of CNTs. The interface between CNT and Ni is so weak that the load cannot be effectively transferred in the in-plane direction, resulting in defects at the interface, which is similar to the CNT-reinforced metallic glass nanocomposites [40]. This is why the in-plane mechanical properties of the CNHONNs are similar to those of the HONNs and sometimes they are lower than those of HONNs, as evidenced by the result in Figure 5.…”

Section: Effect Of Cnts On Mechanical Propertiesmentioning

confidence: 89%

“…In order to investigate the influence of CNTs, we take the 4th group of samples as the example by adding different mass fractions of CNTs (as shown in Figure 1c-f). In previous published studies, both zigzag [40] and armchair [36][37][38][39][41][42][43] CNTs were used to strengthen different types of material. And the (4,4) CNT [36,37,42,43] was often used to simulate the mechanical properties of CNT/metal composites.…”

Section: Methodsmentioning

confidence: 99%

Study on Lightweight and Strengthening Effect of Carbon Nanotube in Highly Ordered Nanoporous Nickel: A Molecular Dynamics Study

Zhang

Jiang

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

The mechanical behavior of nanocomposites consisting of highly ordered nanoporous nickel (HONN) and its carbon nanotube (CNT)-reinforced composites (CNHONNs) subjected to a high temperature of 900 K is investigated via molecular dynamics (MD) simulations. The study indicates that, out-of-plane mechanical properties of the HONNs are generally superior to its in-plane mechanical properties. Whereas the CNT shows a significant strengthening effect on the out-of-plane mechanical properties of the CNHONN composites. Compared to pure HONNs, through the addition of CNTs from 1.28 wt‰ to 5.22 wt‰, the weight of the composite can be reduced by 5.83‰ to 2.33% while the tensile modulus, tensile strength, compressive modulus and compressive strength can be increased by 2.2% to 8.8%, 1% to 5.1%, 3.6% to 10.2% and 4.9% to 10.7%, respectively. The energy absorption capacity can also be improved due to the existence of CNTs. Furthermore, the MD simulations provide further insights into the deformation mechanism at the atomic scale, including fracture in tension, pore collapse in compression and local changes in lattice structures due to stacking faults.

show abstract

“…The embedded-atom method (EAM) was used to describe the interaction between Cu atoms, 50,51 and adaptive intermolecular reactive empirical bond-order potential (AIREBO) was used to describe the C-C bonding interaction in graphene. 52 In addition, the interaction between C and Cu was described by Lennard-Jones potential with parameters of 0.046747 eV and 2.83363 Å.…”

Section: Simulation Detailsmentioning

confidence: 99%

Dislocation re-emission induced staged work hardening in graphene-nanotwin reinforced Cu: A molecular dynamics simulation study

Zhang

Huang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

Graphene and nanotwins are two effective reinforced microstructural features to achieve improved mechanical properties of metallic composites, while the two features are generally applied separately. In this study, graphene/nano-twinned Cu nanocomposites models with different arrangement of the graphene and twin boundaries were designed by using molecular dynamics (MD) simulations, and the dislocation processes and the interactions between dislocation and graphene/twin were simulated and investigated. The simulation results indicated the arrangement of graphene and nanotwin affects the work hardening behaviors in the graphene/nano-twinned Cu composites, i.e., two staged work hardening behavior corresponded to cyclic process of dislocation hindrance-absorption-reemission in the model with relatively small twin spacing and twin-graphene spacing, while the work hardening dominated by dislocation intersection and multiplication occurred in the model with large twin-spacing. The simulation provided herein demonstrated that the special arrangement of graphene and nanotwins led a way to tailoring the mechanical properties of metallic composites with various work hardening behaviors. Graphical abstract Highlights 1. Dislocation reactions between twins and graphene were simulated and analyzed. 2. Twin-graphene distance and the twin distance play key roles in the reaction. 3. The mechanism corresponding to work hardening changes in the limited two distances.

show abstract

Mechanical characteristics of CNT-reinforced metallic glass nanocomposites by molecular dynamics simulations

Cited by 45 publications

References 50 publications

Role of Glass Composition on Mechanical Properties of Shape Memory Alloy‐Metallic Glass Composites

Role of Glass Composition on Mechanical Properties of Shape Memory Alloy‐Metallic Glass Composites

Study on Lightweight and Strengthening Effect of Carbon Nanotube in Highly Ordered Nanoporous Nickel: A Molecular Dynamics Study

Dislocation re-emission induced staged work hardening in graphene-nanotwin reinforced Cu: A molecular dynamics simulation study

Contact Info

Product

Resources

About