Additive manufacturing of tungsten, tungsten-based alloys, and tungsten matrix composites

Pan, Shuaihang; Yao, Gongcheng; Cui, Yinan; Meng, Fanshi; Luo, Chuan; Zheng, Tianqi; Singh, Gurminder

doi:10.1007/s42864-022-00153-6

Cited by 66 publications

(35 citation statements)

References 163 publications

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“…The ac conductivity is calculated using the formula:

\ {\sigma }_{{\mathrm{ac}}} = \ \omega {\varepsilon }_{\mathrm{r}}{\varepsilon }_0{\mathrm{tan}}\delta

, all symbols have their usual meaning. [ 58 ] Plotting SrCu 1/3 Mn 1/3 W 1/3 O 3 perovskite from 250 °C to 500 °C, Figure a shows frequency along the X‐axis and ac conductivity along the Y‐axis. In contrast, Figure 9b shows the inverse of the absolute temperature (10 3 / T ) along the X‐axis and ac conductivity along the Y‐axis at various frequencies, including 1, 10, 100 kHz, 1, 2, 3, 4, and 5 MHz.…”

Section: Resultsmentioning

confidence: 99%

A Comprehensive Study of Cu/W Double Substitution in Strontium Manganate Ceramics for Some Device Applications

Parida

2024

Cryst. Res. Technol.

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In this communication, the synthesis and characterizations of modified strontium manganate (SrCu1/3Mn1/3W1/3O3) (SCMWO) by high‐temperature solid‐state method are reported. The structural analysis predicts a monoclinic structure with a crystallite size of 36.8 nm. The analysis of the Raman active modes reveals the presence of all the constituent atomic vibrations. The study of the ultraviolet–visible spectrum provides a bandgap energy of 1.71 eV, which may be suitable for photovoltaic applications. A Maxwell‐Wanger type of polarization effect is observed at low frequency while low dielectric loss makes the material suitable for energy storage devices. The study of the impedance plots reveals the negative temperature coefficient of resistance (NTCR) character. The activation energy increases with both frequency and temperature in the modified perovskite suggesting that conductivity of the sample increases and material characters are changing from dielectric to semiconducting. The symmetrical curves in the electrical modulus plots and shift toward higher frequency region agree with the results of the non‐Debye‐type of relaxation mechanism. The semicircular curves in the Cole–Cole plots confirm the semiconducting nature and are also well supported by the results of Nyquist plots. The studied material exhibits a semiconductor nature, which may be found suitable for energy storage device applications.

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“…The ac conductivity is calculated using the formula:

\ {\sigma }_{{\mathrm{ac}}} = \ \omega {\varepsilon }_{\mathrm{r}}{\varepsilon }_0{\mathrm{tan}}\delta

Section: Resultsmentioning

confidence: 99%

A Comprehensive Study of Cu/W Double Substitution in Strontium Manganate Ceramics for Some Device Applications

Parida

2024

Cryst. Res. Technol.

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“…Furthermore, a comparison between (c) and (d) reveals a reduction in the size of the W grain from a range of 20~45 μm in the absence of Mn to 12~15 μm. The liquid-phase sintering mechanism of W-Ni-Fe tungsten alloy involves the creation of a Ni-Fe liquid phase and the dissolution and subsequent re-precipitation of tungsten [4] . Additionally, when tungsten alloys with manganese (Mn) are sintered, the Ni-Fe liquid phase contains manganese oxide (MnO), which enhances the nucleation rate of tungsten particles.…”

Section: Effect Of Mn On the Microstructure Of Alloysmentioning

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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“…The traditional material of the medicine-type cover is copper, but with the development of armored weapons [1] , a single copper can no longer meet the modern needs of armor-breaking. Later, as the research was advanced and deepened [2] , researchers added metallic tungsten to copper.…”

Section: Introductionmentioning

confidence: 99%

Study on the jet molding of Cu-W-Zr_x alloy liner

Li,

Dong,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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With the rapid development of armored weapons, the improvement of armor-breaking weapons is imminent, and the liners as the core component of armor-breaking has attracted much attention. As a result, the paper uses AUTODYN-2D kinetic simulation software to simulate the generation of jets in the erosion process of Cu-W alloy liner and Cu-W-Zr alloy liner materials. The results demonstrate that the jet created by Cu-W-Zr alloy is longer than that formed by Cu-W alloy, and it has good erosion ability with high head velocity during the jet creation process, which can be used to develop liners.

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Additive manufacturing of tungsten, tungsten-based alloys, and tungsten matrix composites

Cited by 66 publications

References 163 publications

A Comprehensive Study of Cu/W Double Substitution in Strontium Manganate Ceramics for Some Device Applications

A Comprehensive Study of Cu/W Double Substitution in Strontium Manganate Ceramics for Some Device Applications

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

Study on the jet molding of Cu-W-Zr_x alloy liner

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Additive manufacturing of tungsten, tungsten-based alloys, and tungsten matrix composites

Cited by 66 publications

References 163 publications

A Comprehensive Study of Cu/W Double Substitution in Strontium Manganate Ceramics for Some Device Applications

A Comprehensive Study of Cu/W Double Substitution in Strontium Manganate Ceramics for Some Device Applications

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

Study on the jet molding of Cu-W-Zrx alloy liner

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Study on the jet molding of Cu-W-Zr_x alloy liner