Nanoindentation into FeCoNiCrCu high-entropy alloy: An atomistic study

Mu, Anran; Han, Ye; Song, Xiaojie; Dong, Yihang; Hong, Yancheng; Zhang, Guosong; Hua, Rong

doi:10.1080/02670836.2021.1885095

Cited by 22 publications

(7 citation statements)

References 48 publications

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“…Many scholars have studied the mechanical properties, nanotwin structures, and defect properties of FeNiCrCoCu HEAs − but have not yet investigated the nucleation growth; therefore, in the present work, we investigated the homogeneous and heterogeneous crystal nucleation of HEA melts by molecular dynamics (MD) simulations using the embedded atom method (EAM) interatomic potential of FeNiCrCoCu . The homogeneous and heterogeneous nucleation of HEA melts during quenching were investigated.…”

Section: Introductionmentioning

confidence: 99%

Growth Pattern of Homogeneous and Heterogeneous Nucleation in High-Entropy FeNiCrCoCu Alloys

Gao

Wang

Huang

et al. 2022

Crystal Growth & Design

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High-entropy alloys (HEAs) consist of five or more metallic elements in equal or near-atomic proportions to form multicomponent alloys with high configurational entropy. Recently, nanostructured HEAs have attracted considerable attention from both academia and industry for their extraordinary properties. Nucleation during solidification directly affects the properties of metals and alloys. Although experimental techniques to study the microstructure and nucleation growth during metal solidification continue to make remarkable developments, many unanswered questions remain in this field. Molecular dynamics (MD) simulation is an effective tool to describe the nucleation mechanism and microstructural evolution of HEAs during solidification processes. In this paper, we explore the atomic origins of the homogeneous and heterogeneous nucleation in the FeNiCrCoCu HEA using classical MD simulations. The results show an obvious difference between homogeneous and heterogeneous nucleation. A new growth pattern of crystals in HEA was discovered during the heterogeneous nucleation process. The mechanisms of heterogeneous and homogeneous nucleation and their control factors are revealed through the evolution of several crystalline structures and dislocation density.

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Section: Introductionmentioning

confidence: 99%

Growth Pattern of Homogeneous and Heterogeneous Nucleation in High-Entropy FeNiCrCoCu Alloys

Gao

Wang

Huang

et al. 2022

Crystal Growth & Design

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“…The lattice constant increased from 2.878 nm to 2.887 nm as the x value increased. However, do not also add the lattice strain [ 102 ]. Fig.…”

Section: Mechanical Properties Of Heasmentioning

confidence: 99%

Development of high entropy alloys (HEAs): Current trends

2024

Heliyon

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“…Embedded atom method (EAM) [43] potential parameters developed by Farkas et al [44] were employed to describe the interaction between the atoms of ternary and quinary configurations. Various researchers have already validated this interatomic potential to precisely predict the structural properties of ternary and quinary multi-elemental alloys, also called random alloy [20][21][22][45][46][47][48][49][50][51][52][53][54].…”

Section: Modelling and Simulation Detailsmentioning

confidence: 99%

Effect of Frenkel pairs on the tensile and shock compression strength of multi-elemental alloys

Singh,

Parashar

2023

Phys. Scr.

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In this article, molecular dynamics simulations were performed to study the effect of irradiation damage on the tensile and shock compression behaviour of multi-elemental alloys (medium and high entropy alloys). These simulations were divided into three broad stages; in the first section, a displacement cascade was generated in the simulation box using primary knock-on atoms (PKA) with kinetic energy in the range of 0.25 to 2 keV. In the second stage, the same defected crystal was subjected to tensile loading to study the deformation mechanism of multi-elemental alloys containing these irradiation-induced defects. In the last stage, tensile loading was replaced by ultrashort shock pulse loading. Irradiation damage significantly alters the tensile strength of Fe-Ni-Co-Cr-Cu and Fe-Ni-Cr alloys. The primary deformation governing mechanism is the spatial distribution of stacking faults and partial dislocations during deformation. Lattice distortion reduces the tensile strength of multi-elemental alloys compared to A-atom configurations. In shock loading, the shock resistance capability of irradiated Fe-Ni-Co-Cr-Cu was better than Fe-Ni-Cr alloy. Lattice distortion in random multi-elemental alloys helps in mitigating the shock propagation.

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Nanoindentation into FeCoNiCrCu high-entropy alloy: An atomistic study

Cited by 22 publications

References 48 publications

Growth Pattern of Homogeneous and Heterogeneous Nucleation in High-Entropy FeNiCrCoCu Alloys

Growth Pattern of Homogeneous and Heterogeneous Nucleation in High-Entropy FeNiCrCoCu Alloys

Development of high entropy alloys (HEAs): Current trends

Effect of Frenkel pairs on the tensile and shock compression strength of multi-elemental alloys

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