Strengthening mechanism of NiCoAl alloy induced by nanotwin under Hall-Petch effect

Lu, Xuefeng; Zhang, Wei; Guo, Xin; Xu, Yang; Li, Junchen; Ren, Junqiang; Xue, Hansong; Tang, Fuling

doi:10.1016/j.ijmecsci.2023.108478

Cited by 17 publications

(1 citation statement)

References 73 publications

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“…Additionally, thermodynamic calculations [17][18][19] are commonly utilized as an important tool for predicting alloy properties and predicting the existing issues through comparisons of different processes or compositions. In addition, the utilization of molecular dynamics (MD) simulation calculations [20][21][22] represents a promising approach for exploring the mechanical properties of materials. Sun et al studied the tensile properties of the (HfNbTa)1-xTix multiprinciple elemental alloys with 5 group components by MD [23].…”

Section: Introductionmentioning

confidence: 99%

A novel IN718 superalloy of superior mechanical properties designed by the first principle and D-electron theory

Li,

Chen,

wang

et al. 2023

Preprint

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A novel IN718 superalloy has been designed based on the commercial IN718 alloy to improve its service performance in the aerospace field. Firstly, first principle calculations were performed to determine the total energy, formation enthalpy, and binding energy of the γ-Ni phase, Laves-Fe2Nb phase, and γ-Ni/Fe2Nb interface model doped with Co, Cr, Mo, V, and Zr atoms in IN718 superalloy. The calculation results reveal the influence of various atoms doping on the typical phases of the IN718 superalloy. Secondly, 8488 group’s suitable alloy composition data were selected from 831600 group’s datasets by D-electron theory and Python programs. Subsequently, the optimal alloy components were determined by thermodynamic calculations using the control variable. Finally, molecular dynamics tensile simulations and mechanical properties tests were conducted to validate the mechanical properties of the optimized superalloy. This entire calculation process serves as a reference for designing other alloy compositions.

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Section: Introductionmentioning

confidence: 99%

A novel IN718 superalloy of superior mechanical properties designed by the first principle and D-electron theory

Li,

Chen,

wang

et al. 2023

Preprint

View full text Add to dashboard Cite

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Edge Dislocation and Grain Boundaries Effects on the Mechanical Properties in NiCoAl$N i C o A l$ Medium Entropy Alloy

Khan,

Ali

2024

Adv Eng Mater

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Medium‐entropy alloys (MEAs) are becoming increasingly popular owing to their superior mechanical features. Using molecular dynamics (MD) simulations, we, for the first time, investigate in this work how grain boundaries (GBs) and dislocations affect the mechanical properties of face‐centered cubic (FCC) equiatomic NiCoAl MEA. We analyze lattice distortion, elastic constants and moduli, machinability index, Vickers hardness, and Kleinman parameters to explore how grain boundaries affect NiCoAl MEA. It tends to become more rigid based on the link between its elastic moduli and GBs. Interestingly, our analyses of Cauchy pressure, Poisson’s, and Pugh’s ratios all indicate the ductility of the studied MEA. The investigation of anisotropy factors indicates that NiCoAl MEA exhibits anisotropy, which is reduced by the addition of GBs. Mechanical properties of our considered MEA, such as ductility, fracture toughness, and stability, are significantly influenced by the GBs. Our results show that studying these phenomena can help us design structural nano‐metal materials with superior mechanical properties, allowing them to be used in various applications.This article is protected by copyright. All rights reserved.

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Effect of Induction Heating Composite Shot Peening on the Wear Resistance and Fatigue Strength of 20CrMnTi Spiral Bevel Gears

Zhang,

Hu,

Yan

et al. 2024

JOM

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Strengthening mechanism of NiCoAl alloy induced by nanotwin under Hall-Petch effect

Cited by 17 publications

References 73 publications

A novel IN718 superalloy of superior mechanical properties designed by the first principle and D-electron theory

A novel IN718 superalloy of superior mechanical properties designed by the first principle and D-electron theory

Edge Dislocation and Grain Boundaries Effects on the Mechanical Properties in NiCoAl$N i C o A l$ Medium Entropy Alloy

Effect of Induction Heating Composite Shot Peening on the Wear Resistance and Fatigue Strength of 20CrMnTi Spiral Bevel Gears

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