High-temperature compression behavior of W–10wt.%Cu composite

Lin, Dongguo; Han, Ji-Sheng; Kwon, Young Sam; Ha, Sangyul; Bollina, Ravi; Park, Seong Jin

doi:10.1016/j.ijrmhm.2015.04.031

Cited by 20 publications

(4 citation statements)

References 15 publications

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“…With the temperature further increased to 900℃, the strength of the nanostructured W-Cu-Cr-ZrC composite decreased to 1150MPa, which is still approximately four times as high as that of the W-Cu composite (about 300MPa). Although with lower content of Cu the strength of W-Cu composites can be increased, the strength of the present nanostructured W-Cu-Cr-ZrC with 20 wt% Cu at 900℃ is more than three times as high as that of the coarse-grained W-Cu with 10 wt% Cu (about 350 MPa) reported in the literature for the same testing temperature [50] .…”

Section: Mechanical Performance At High Temperaturesmentioning

confidence: 40%

Thermal stability and high-temperature mechanical performance of nanostructured W–Cu–Cr–ZrC composite

Cao

Hou

Tang

et al. 2021

Composites Part B: Engineering

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Section: Mechanical Performance At High Temperaturesmentioning

confidence: 40%

Thermal stability and high-temperature mechanical performance of nanostructured W–Cu–Cr–ZrC composite

Cao

Hou

Tang

et al. 2021

Composites Part B: Engineering

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“…In addition, at the deformation temperature below 500°C, all samples showed obvious strain hardening, and the strain gradually reduced with the increasing temperature. While at the temperature above 500°C, the stress–strain curves presented typical rheological steady state of dynamic softening exceeding work hardening [32,33]. It should also be noted at 900°C that the compressive strength of the ultrafine-grained W–Cu composite reached more than twice that of the micron-sized W–Cu composite, indicating its great superiority in enduring the contact-loading at high temperature.…”

Section: Resultsmentioning

confidence: 99%

Ultrafine-grained W–25 wt-%Cu composite with superior high-temperature characteristics

Zhang

Zhuo

2017

Materials Science and Technology

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In the present work, several ultrafine-grained W–Cu composites with bi-continuous microstructure have been prepared through combined processes of high-energy ball-milling, liquid-phase sintering and infiltration. The microstructure, relative density, hardness and electrical conductivity of the W–Cu composites with copper content ranging from 20 to 35 wt-% were investigated to determine the optimal composition. Then, the high-temperature characteristics such as thermo-mechanical stability, high-temperature compressive performance and high-temperature wear behaviour of the optimal W–25 wt-%Cu composite were systematically assessed in comparison with those of the micron-sized W–25 wt-%Cu composite. The results showed that the ultrafine-grained W–Cu composite exhibited distinctly superior thermo-mechanical stability, as well as high-temperature compressive and wear-resistant properties, indicating its great potential in enduring repeated contact-loading at high temperature.

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“…The precise characterization of the dynamic mechanical characteristics of materials can be achieved through a complete analysis of the impacts of strain hardening, strain rate hardening, and material softening on these properties. σ =(A+Bɛ n )(1+έ*) c (1-T* m ) [7] (1) Dynamic compression of hot-pressed and sintered W-Ni-Fe alloys and W-Ni-Fe-Mn alloys is performed in this work by utilizing a split Hopkinson pressure bar to collect stress-strain curves at various strain rates and to fit the MJC constitutive equations of the two alloys [3] . Finally, the dependability of the constitutive equations is tested by entering the generated constitutive relations into the finite element program LS-DYNA and running the calculation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic compression intrinsic relationship of W-Ni-Fe-Mn alloys based on J-C modeling

Wang,

Deng,

et al. 2024

J. Phys.: Conf. Ser.

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Dynamic compression tests were performed on the sample alloys by using a detached Hopkinson compression bar with a diameter of 14.5 mm caliber for the kinetic behavior of W-Ni-Fe alloy and W-Ni-Fe-Mn alloy materials in the erosion process. The true stress-true strain curves of the two sample alloys were fitted based on the JC eigenstructure model, and the eigenstructure relationships of the two alloys were finally obtained. The obtained constitutive equations were then used to dynamically compress the specimens by using LS-DYNA dynamics software, and the simulated true stress-strain curves of the two alloys at various strain rates agreed well with the experimentally obtained curves, allowing them to be used for simulation calculations under impact loading. When compared toW-Ni-Fe alloys, the dynamic mechanical characteristics of alloys with Mn addition are greatly improved.

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High-temperature compression behavior of W–10wt.%Cu composite

Cited by 20 publications

References 15 publications

Thermal stability and high-temperature mechanical performance of nanostructured W–Cu–Cr–ZrC composite

Thermal stability and high-temperature mechanical performance of nanostructured W–Cu–Cr–ZrC composite

Ultrafine-grained W–25 wt-%Cu composite with superior high-temperature characteristics

Dynamic compression intrinsic relationship of W-Ni-Fe-Mn alloys based on J-C modeling

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