Excellent wear resistance of multicomponent nanocrystalline W‒Cu based composite

Li, Yurong; Hou, Chao; Cao, Lijun; Liu, Chao; Tang, Faiwei; Song, Xiaoyan; Nie, Zuoren

doi:10.1016/j.jallcom.2021.158627

Cited by 21 publications

(6 citation statements)

References 30 publications

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“…Reproduced with permission. [ 149 ] Copyright 2021, Elsevier B.V. e–g) Scanning electron microscope (SEM) image, elemental distribution, microhardness and electrical conductivity of W–Cu compacts. Reproduced with permission.…”

Section: Homogenous and Inhomogeneous Architecturementioning

confidence: 99%

“…The homogeneous microstructure architecture hinders crack propagation and creates different crack propagation paths, which in turn improves the plasticity of the samples. [149] Copyright 2021, Elsevier B.V. e-g) Scanning electron microscope (SEM) image, elemental distribution, microhardness and electrical conductivity of W-Cu compacts. Reproduced with permission.…”

Section: Et Al Prepared a W-cu-based Nanocomposite Co-doped Withmentioning

confidence: 99%

“…a-d) Element distribution, surface wear morphology, friction coefficient and deformation gradient of nanocrystalline W-Cu composites. Reproduced with permission [149]. Copyright 2021, Elsevier B.V. e-g) Scanning electron microscope (SEM) image, elemental distribution, microhardness and electrical conductivity of W-Cu compacts.…”

mentioning

confidence: 99%

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Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses

Dai

et al. 2023

Advanced Science

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The natural design and coupling of biological structures are the root of realizing the high strength, toughness, and unique functional properties of biomaterials. Advanced architecture design is applied to many materials, including metal materials, inorganic nonmetallic materials, polymer materials, and so on. To improve the performance of advanced materials, the designed architecture can be enhanced by bionics of biological structure, optimization of structural parameters, and coupling of multiple types of structures. Herein, the progress of structural materials is reviewed, the strengthening mechanisms of different types of structures are highlighted, and the impact of architecture design on the performance of advanced materials is discussed. Architecture design can improve the properties of materials at the micro level, such as mechanical, electrical, and thermal conductivity. The synergistic effect of structure makes traditional materials move toward advanced functional materials, thus enriching the macroproperties of materials. Finally, the challenges and opportunities of structural innovation of advanced materials in improving material properties are discussed.

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Section: Homogenous and Inhomogeneous Architecturementioning

confidence: 99%

Section: Et Al Prepared a W-cu-based Nanocomposite Co-doped Withmentioning

confidence: 99%

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Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses

Dai

et al. 2023

Advanced Science

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“…However, most studies to date have mainly focused on investigating the hardness and strength of W–Cu composites at room temperature [ 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. For the enhancement of wear resistance and high-temperature strength of W–Cu composites, grain refinement and second-phase strengthening are commonly used methods [ 22 , 23 ]. Owing to the high thermal stability and superior high-temperature properties, WC has attracted much attention as the strengthening phase of conventional W–Cu composites [ 12 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Grain Refinement on the Comprehensive Mechanical Performance of W–Cu Composites

et al. 2023

Self Cite

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W–Cu composites are commonly subjected to coupled multiple fields in service, which imposes high requirements on their overall performance. In this study, the ultrafine-grained W–Cu composite was fabricated using the combination of electroless plating and spark plasma sintering. The wear resistance and high-temperature compressive properties of the ultrafine-grained W–Cu composite were investigated and compared with those of the commercial coarse-grained counterpart. Moreover, the underlying strengthening and wear mechanisms were also discussed. Here we show that the ultrafine-grained W–Cu composite exhibits superior integrated mechanical performance, making it a potential alternative to commercial W–Cu composites.

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“…Due to the mutual insolubility of W and Cu, powder metallurgy is the most widely used method for almost all composite fabrication, but this method does not guarantee the required density and mechanical properties of the W–Cu alloys [ 25 , 26 , 27 ]. To improve the relative density and wettability of copper and tungsten, a small amount of Co, Ni, Ti, Cr, or Fe is usually added to the W powder as sintering activators [ 28 , 29 , 30 , 31 ]. The isostatic cold pressing of W powder, combined with 1100 °C annealing for 2 h for the tungsten skeleton formation and subsequent copper infiltration at 1350 °C in a hydrogen atmosphere for 90 min, is used for the W–Cu composite fabrication [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Isostatic Hot Pressed W–Cu Composites with Nanosized Grain Boundaries: Microstructure, Structure and Radiation Shielding Efficiency against Gamma Rays

et al. 2022

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The W–Cu composites with nanosized grain boundaries and high effective density were fabricated using a new fast isostatic hot pressing method. A significantly faster method was proposed for the formation of W–Cu composites in comparison to the traditional ones. The influence of both the high temperature and pressure conditions on the microstructure, structure, chemical composition, and density values were observed. It has been shown that W–Cu samples have a polycrystalline well-packed microstructure. The copper performs the function of a matrix that surrounds the tungsten grains. The W–Cu composites have mixed bcc-W (sp. gr. Im3m) and fcc-Cu (sp. gr. Fm3m) phases. The W crystallite sizes vary from 107 to 175 nm depending on the sintering conditions. The optimal sintering regimes of the W–Cu composites with the highest density value of 16.37 g/cm3 were determined. Tungsten–copper composites with thicknesses of 0.06–0.27 cm have been fabricated for the radiation protection efficiency investigation against gamma rays. It has been shown that W–Cu samples have a high shielding efficiency from gamma radiation in the 0.276–1.25 MeV range of energies, which makes them excellent candidates as materials for radiation protection.

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Excellent wear resistance of multicomponent nanocrystalline W‒Cu based composite

Cited by 21 publications

References 30 publications

Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses

Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses

Effect of Grain Refinement on the Comprehensive Mechanical Performance of W–Cu Composites

Isostatic Hot Pressed W–Cu Composites with Nanosized Grain Boundaries: Microstructure, Structure and Radiation Shielding Efficiency against Gamma Rays

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